Question about fast charging - Samsung Galaxy Note 9 Questions & Answers

Hi everyone, I'm new here with my Note 9 coming from a Galaxy S5. I have 2 questions.
I want to know firstly what (wired) charging do the majority of Galaxy Note 9 owners employ? Standard or fast charging? I am very weary of fast charging because of increased battery degradation.
My second question is this. I am assuming that fast charging increases battery degradation because of increased heat from the higher voltages. And yes I know that it is adaptive and gradually tapers off. I have run an experiment. I have installed a couple of battery temperature apps and charged through standard charging. Then I have put the phone on a solid piece of steel plate and charged through fast charging. The temperatures of the battery are identical. I have checked this a number of times. The steel plate even at room temperature is quite cold.
So does this mean that if I fast charge with the phone on a cold steel plate and the temperature is no higher than standard charging resting on a usual surface, that fast charging in this case causes no additional battery degradation?
Thanks.

Fast charging, most of the time

Fast wireless charging all the time. Even when it's in my car dock it wirelessly charges in that can be for 3-4 hours a day on and off depending on journey. Screw battery degradation I'll use the upgrade programme to upgrade next year.

Slow charging. I have the same concern as you hence I off the fast charging function. No diff to me since I charge my phone only at night when I am about to sleep. Do not require charging to be fast.

BlackCatSam said:
Hi everyone, I'm new here with my Note 9 coming from a Galaxy S5. I have 2 questions.
I want to know firstly what (wired) charging do the majority of Galaxy Note 9 owners employ? Standard or fast charging? I am very weary of fast charging because of increased battery degradation.
My second question is this. I am assuming that fast charging increases battery degradation because of increased heat from the higher voltages. And yes I know that it is adaptive and gradually tapers off. I have run an experiment. I have installed a couple of battery temperature apps and charged through standard charging. Then I have put the phone on a solid piece of steel plate and charged through fast charging. The temperatures of the battery are identical. I have checked this a number of times. The steel plate even at room temperature is quite cold.
So does this mean that if I fast charge with the phone on a cold steel plate and the temperature is no higher than standard charging resting on a usual surface, that fast charging in this case causes no additional battery degradation?
Thanks.
Click to expand...
Click to collapse
If you plan on keeping your Note 9 as long as you did your S5 then slow charge with wire and also try your best to charge from 40 -80%.
Sent from my SM-N960U1 using Tapatalk

Samsung is claiming 95% battery charge capacity after 2 years (80% is normal). So there is little reason to hold charging to 40 -80% for the normal lifetime of a phone. And also LION batteries are never allowed to charge or discharge completely - it's hazardous. So Samsung is already limiting how much power the phone can draw or charge the battery. (So do electric car manufacturers)

^^^Interesting...

hankvb said:
Samsung is claiming 95% battery charge capacity after 2 years (80% is normal). So there is little reason to hold charging to 40 -80% for the normal lifetime of a phone. And also LION batteries are never allowed to charge or discharge completely - it's hazardous. So Samsung is already limiting how much power the phone can draw or charge the battery. (So do electric car manufacturers)
Click to expand...
Click to collapse
A quote is worthless without a source, where did you hear Samsung state the phone would have 95% battery charge capacity after 2 years? Also I'm not sure you understand Li-ion batteries, they are allowed to be fully charged but not completely discharged, this is included in the mAh ratings. Also electric car manufacturers do infact recommend something similar to 40 - 80% charging, for example, Tesla by default do not charge 100%. Even Elon Musk recommends 30 - 80% charging: https://twitter.com/elonmusk/status/448466037441179649

I use slow charging. I believe it is quite fast even with slow charging.
If there is an option to choose whether you want fast and slow charging, note that fast one has some downsides.

A quote is worthless without a source, where did you hear Samsung state the phone would have 95% battery charge capacity after 2 years? Also I'm not sure you understand Li-ion batteries, they are allowed to be fully charged but not completely discharged, this is included in the mAh ratings. Also electric car manufacturers do infact recommend something similar to 40 - 80% charging, for example, Tesla by default do not charge 100%. Even Elon Musk recommends 30 - 80% charging:
Wow took 5 seconds to find many reports of the Samsung statement.
https://www.notebookcheck.net/Samsu...ain-95-capacity-after-two-years.244370.0.html

hankvb said:
A quote is worthless without a source, where did you hear Samsung state the phone would have 95% battery charge capacity after 2 years? Also I'm not sure you understand Li-ion batteries, they are allowed to be fully charged but not completely discharged, this is included in the mAh ratings. Also electric car manufacturers do infact recommend something similar to 40 - 80% charging, for example, Tesla by default do not charge 100%. Even Elon Musk recommends 30 - 80% charging:
Wow took 5 seconds to find many reports of the Samsung statement.
https://www.notebookcheck.net/Samsu...ain-95-capacity-after-two-years.244370.0.html
Click to expand...
Click to collapse
Although I don't blindly trust what manufacturers claim, I did however test my wife's note 8 and used accubattery pro on her device from new. Unlike me, she would always topup her phone and also fast wireless charge. After a year prior to her trading her note 8 in for a note 9 I checked the health tab, I know it's not accurate however as a ballpark is stated her battery health was at 97% which isn't pretty bad for 12 months of usage. My note 8 was at 99% using the 40-80 rule approx 90 % of the time. If one was going to keep their device longer than two years I'd still recommend using the 40-80 method to prolong battery life. However most Inc myself upgrade yearly so it's all moot. I just do it (80-40) out of habit.
Sent from my SM-N960U1 using Tapatalk

hankvb said:
A quote is worthless without a source, where did you hear Samsung state the phone would have 95% battery charge capacity after 2 years? Also I'm not sure you understand Li-ion batteries, they are allowed to be fully charged but not completely discharged, this is included in the mAh ratings. Also electric car manufacturers do infact recommend something similar to 40 - 80% charging, for example, Tesla by default do not charge 100%. Even Elon Musk recommends 30 - 80% charging:
Wow took 5 seconds to find many reports of the Samsung statement.
https://www.notebookcheck.net/Samsu...ain-95-capacity-after-two-years.244370.0.html
Click to expand...
Click to collapse
And while I'm thinking of it. Why don't you substantiate your quote??

Related

Samsung Charger better than LG's

Hey everyone
Just want to ask if anybody noticed the same as me regarding the charger of LG:
if I plug the charger and use the phone it heats up really fast and charging speed is slow. The heat slows down my 4X HD and the performance is sh*tty as hell.
I once forgot my charger an used one from my dad's Samsung and I noticed a incredible difference. No heating at all and it charges much faster (with LG over night ~ 8 hours sometimes not even fully loaded from 15%, with Samsung 4-5 hours full with YouTube use and other minor things).
When I use my phone while plugged with LG charger it often even drains some battery (2-3% in 20 mins discharge, then charge up to 5% in the same time and so on).
Have anybody got the same "problems" or has my charger maybe a hardware failure?
Greetings
Marius
Sent from my LG-P880
Weird. My phone charges from 0%-80% in like 1 hour, then the last 20% tend to take while longer. But also if I "Overcharge" it (that is to say charge it for about 2 hours when it's still 100%) it feels like it has charged 110%. Cause it takes forever to go down to 99% but then it decreases faster.
This is with the included LG charger. If I use my samsung (which is like 500mah) it takes longer.
I don't experince any performance decrease when charging.
baxtex said:
Weird. My phone charges from 0%-80% in like 1 hour, then the last 20% tend to take while longer. But also if I "Overcharge" it (that is to say charge it for about 2 hours when it's still 100%) it feels like it has charged 110%. Cause it takes forever to go down to 99% but then it decreases faster.
This is with the included LG charger. If I use my samsung (which is like 500mah) it takes longer.
I don't experince any performance decrease when charging.
Click to expand...
Click to collapse
Are you on stock rom or on a custom rom? I'm on WerewolfJB and that's maybe why it heats up but the faster charging with the Samsung charger is really noticeable, especially when I use the phone, like I said.
Thanks for sharing your experience with it
Sent from my LG-P880
Omario-242 said:
Are you on stock rom or on a custom rom? I'm on WerewolfJB and that's maybe why it heats up but the faster charging with the Samsung charger is really noticeable, especially when I use the phone, like I said.
Thanks for sharing your experience with it
Sent from my LG-P880
Click to expand...
Click to collapse
I'm on a AOSP rom (Slimbean). But I do share your experience with heat, both on the phone and the charger itself. But I think it's due to the high currency.
Your charger could just be broken. LG charger's output current is rated at 1.2A which means that the battery should be charged from 0% to 100% in about 1 h 45 min. It could take longer if the charging current gets smaller when the battery is starting to get full.
Thundermand said:
Your charger could just be broken. LG charger's output current is rated at 1.2A which means that the battery should be charged from 0% to 100% in about 1 h 45 min. It could take longer if the charging current gets smaller when the battery is starting to get full.
Click to expand...
Click to collapse
wrong, "charger" is not current source
for topic: your charger is bad, replace it
I had an issue that CPU was always 760mhz while charging with zen+HYPER governors. RevoltJB+OP kernel 2.53.
Noticed that my raspberry charger(2A) was faster than LG stock charger. Also normal for me too that battery even decreases while using phone at charger.
Hallako said:
I had an issue that CPU was always 760mhz while charging with zen+HYPER governors. RevoltJB+OP kernel 2.53.
Noticed that my raspberry charger(2A) was faster than LG stock charger. Also normal for me too that battery even decreases while using phone at charger.
Click to expand...
Click to collapse
there is maximum allowed current to charge phone. it is controlled by electronics inside the phone. if you are using charger that has bigger maximum current it is possible that phone battery is faster charged, but as i said, it depends on interior charging circle
Charging Current 101
To clarify the above responses:
The LG charger *should* be more than adequate to charge the handset, as that is what it was designed to do....
If you were to use a different charger, e.g. one from another phone or a shop bought replacement, then the maximum output current of the charger is an important factor: the lower the rating (in mA or A) the slower the charge and therefore the longer it will take. Using the phone whilst charging will also increase the charge time as you are using the battery whilst charging it (like filling the bath with the plug out), more so with apps that load the graphics processor (GPU) such as youtube or games as these are battery intense tasks.
The rate at which the battery charges is ultimately decided by the handset; most modern phones will fast-charge most of the way, then slow charge the last few % to avoid overheating and damaging the battery, so having a charger rated to, say, 2.4A (or 2400mA) does not mean the battery will charge twice as fast as one rated at 1.2A as the phone dictates how much current it needs.
That will either clear up a lot of questions or will mean nothing at all
baxtex said:
Weird. My phone charges from 0%-80% in like 1 hour, then the last 20% tend to take while longer. But also if I "Overcharge" it (that is to say charge it for about 2 hours when it's still 100%) it feels like it has charged 110%. Cause it takes forever to go down to 99% but then it decreases faster.
This is with the included LG charger. If I use my samsung (which is like 500mah) it takes longer.
I don't experince any performance decrease when charging.
Click to expand...
Click to collapse
Same. Charging here is very fast overall.

best wireless charger for Exynos Galaxy Note 8 for US shopper

What's the best wireless charger (also, if possible, one cheaper than Samsung's) for the Galaxy Note 8 Exynos variant? I'm shopping for accessories for it in the US, and am not sure about if ones meant for the Qualcomm version are compatible or the best at charging it.
PloniAlmoni said:
What's the best wireless charger (also, if possible, one cheaper than Samsung's) for the Galaxy Note 8 Exynos variant? I'm shopping for accessories for it in the US, and am not sure about if ones meant for the Qualcomm version are compatible or the best at charging it.
Click to expand...
Click to collapse
I use the Tylt Vu wireless charger on my Note 8. I used this charger previously on my Motorola Nexus 6, and it works great on both phones. Beware of buying it on ebay or other non-official websites. The prices sometimes are greater than buying it at the Tylt Vu website: https://www.tylt.com/
They make several products, and the one I use and recommend is the Vu, because it is only $30.00 and it holds the phone at a 45 degree angle. This is perfect for working, surfing, etc. because if you get a notification, you simply glance at the phone and see it easily. The Vu also charges the phone while it is on, and the battery gains on its percentage. I find this to be a great advantage because it makes the battery last a long time. Deep drain cycles kill lithium-ions and with wireless charging that gains, you never get below 90%. When I go on the road, the phone maybe goes down to 70%, but that's not a big deal. A big deal is when it starts going below 50%. The closer it gets to 0%, the deeper the discharge cycle and the more the chemistry inside the battery changes to be unusable.
Huele Fello said:
I use the Tylt Vu wireless charger on my Note 8. I used this charger previously on my Motorola Nexus 6, and it works great on both phones. Beware of buying it on ebay or other non-official websites. The prices sometimes are greater than buying it at the Tylt Vu website: https://www.tylt.com/
They make several products, and the one I use and recommend is the Vu, because it is only $30.00 and it holds the phone at a 45 degree angle. This is perfect for working, surfing, etc. because if you get a notification, you simply glance at the phone and see it easily. The Vu also charges the phone while it is on, and the battery gains on its percentage. I find this to be a great advantage because it makes the battery last a long time. Deep drain cycles kill lithium-ions and with wireless charging that gains, you never get below 90%. When I go on the road, the phone maybe goes down to 70%, but that's not a big deal. A big deal is when it starts going below 50%. The closer it gets to 0%, the deeper the discharge cycle and the more the chemistry inside the battery changes to be unusable.
Click to expand...
Click to collapse
That's interesting, I read somewhere else that 35% is the best amount to discharge a phone to before recharging, and was a bit concerned about what a wireless charger would do for that. Apparently that's wrong?
PloniAlmoni said:
That's interesting, I read somewhere else that 35% is the best amount to discharge a phone to before recharging, and was a bit concerned about what a wireless charger would do for that. Apparently that's wrong?
Click to expand...
Click to collapse
From my point of view it's wrong. There could be some circumstances where the 35% is correct, but in general it is best to not discharge batteries down to those levels too many times, because the discharge cycle changes the chemistry inside the battery such that it doesn't accept the full amount of charge that it accepted prior to the deep discharge. The chemistry changes significantly when you deep discharge down to the single digit percentages and less as as you go up to 50%. My batteries have discharged deeply in the past but they were few and far between. I speculate that when I sold my Nexus 6 about 1.5 months ago, its battery capacity was about 98% due to my careful diligence.
Now why should you take my word on this? I can ask you the same question about the 35%. Why should you take his word on it? My opinion comes from decades of electrical engineering work, mostly in programmable devices and ASIC development, but some of it is in testing. I was hired as a consultant to test batteries for aircraft prior to the lithium-ions showing up in aircraft. We found that lead-acid batteries changed chemistries significantly when they were deep discharged. This is evident when people have cars that sit for a while. The batteries have normal self-discharge and need to be charged when the car owner finally gets around to wanting to start the engine. That really wears a battery down, and they make trickle chargers to prevent batteries from deep discharging.
Then came the lithium-ions. These tests by the way also involved testing of charging curves or how the voltage on the batteries are changed as they charged. We found two things. One is lithium-ions behave similarly to lead-acid batteries when deep discharge cycles occur. Both types of batteries lose some capacity. There are different lithium-ion chemistries, but they all seem to have the same characteristics with deep discharge cycles. The other thing we found is that most devices have smart chargers in order to prevent lithium-ion fires. They will take a large voltage and convert it to a charging cycle voltage that varies depending on where the charge percentage is. While these chargers are sold to make them look like they're tweaking the hell out of the batteries' capacity, they're mostly there to achieve 100% charge and prevent fires. These chargers not only monitor the batteries' internal voltage but also their temperature.
With our smartphones, this all boils down to chargers simply providing enough power to allow the internal smart charger to charge the battery efficiently, safely and quickly. I've found the Tylt Vu will charge a Nexus 6 and Note 8 sufficiently enough to where it can be used and gain charge simultaneously. As far as deep discharge cycles are concerned, I have actual lab test knowledge of battery charging and discharging, and I've applied this knowledge to my phones and many other devices. In all cases, I have always been able to preserve my batteries such that when I sell them, the new owner gets what I consider a very good OEM installed battery. One of the perils of buying used electronics is the condition of the battery, and I explain this to my buyers. I've always had happy buyers that never complained after the sale.
Huele Fello said:
From my point of view it's wrong. There could be some circumstances where the 35% is correct, but in general it is best to not discharge batteries down to those levels too many times, because the discharge cycle changes the chemistry inside the battery such that it doesn't accept the full amount of charge that it accepted prior to the deep discharge. The chemistry changes significantly when you deep discharge down to the single digit percentages and less as as you go up to 50%. My batteries have discharged deeply in the past but they were few and far between. I speculate that when I sold my Nexus 6 about 1.5 months ago, its battery capacity was about 98% due to my careful diligence.
Now why should you take my word on this? I can ask you the same question about the 35%. Why should you take his word on it? My opinion comes from decades of electrical engineering work, mostly in programmable devices and ASIC development, but some of it is in testing. I was hired as a consultant to test batteries for aircraft prior to the lithium-ions showing up in aircraft.
Click to expand...
Click to collapse
OK, you sold me on it. I had been trained as an electronics technician in a program that was closely associated with NASA/Langley, so I know how smart electronics engineers for avionics testing can be.
Huele Fello said:
From my point of view it's wrong. There could be some circumstances where the 35% is correct, but in general it is best to not discharge batteries down to those levels too many times, because the discharge cycle changes the chemistry inside the battery such that it s had happy buyers that never complained after the sale.
Click to expand...
Click to collapse
This is a very informative post.
Any comments about charging the phone to 100% and leaving the phone connected to charger most of the time
Techvir said:
This is a very informative post.
Any comments about charging the phone to 100% and leaving the phone connected to charger most of the time
Click to expand...
Click to collapse
I used to leave my Nexus 6 on my Tylt Vu wireless charger all of the time. In fact, it was a good parking spot, because it's tilted 45 degrees and easy to see while I punched away on my computers. Then I replaced it with the Note 8, and it's the same scenario. The phones charge to 100% and then trickle charge to keep the battery topped off. This works quite well for practically all phones, regardless of whether they are USB or wireless charged, because smart chargers inside the phones prevent them from overcharging. They do this by monitoring both battery voltage and temperature.
Now let's take the case of the Note 7, more commonly known in some professional circles as the Flame Boss. There was something obviously wrong with it. Can you guess what it was? It was the smart charger, which is the gateway to power in and power out. It was designed wrong for several reasons, but the main reason was the battery and charger weren't matched correctly to the load, i.e. the Note 7 electronics. This caused the charger to allow the battery to deliver power to the electronics regardless of temp. If it had been designed correctly, the battery would have been bigger, which means it could have delivered more power while dissipating more heat to the environment and thus keeping its temperature within limits. The batteries may also have had design and/or manufacturing defects that possibly exacerbated the problem but weren't found in testing. Frankly, I'm surprised that Samsung didn't wring out this problem, because they have an excellent hardware track record. My experience tells me that there's probably several Samsung engineers that said "I told you so" after the fiasco.
So to answer your question directly, yes, go ahead and charge it 100% of the time. You won't hurt the battery, and you will prolong its life, because the chemistry inside that produces ions and thus electrons stays more consistent, ready to start those discharge and charge cycles from near 100% capacity.
My only beef with the Tylt Vu is that it uses a proprietary connector, whereas the vast majority of other wireless charging stands (I personally like the itian A6, and have a number of them scattered around the house and office) use standard connectors such as MicroUSB.
What do you guys think about the official Samsung charger? It seems to be good because it has a fan, since the one he recommended has a proprietary connector, although I already ordered one, I'm reluctant to get more if they're limited in that way.
Just got the Vu, I love it, it's nice...
Any Qi compatible wireless charger should work perfectly fine with your device.

Realme X2 Pro Battery Health - AccuBattery App

For you who use AccuBattery app to monitor your battery usage, can you share yours?
Because mine is showing my battery health is only 47%. I think it's maybe, just maybe, the app only read half of the battery capacity. Since this phone is actually have two batteries installed in a single pack of battery.
With this phone I got around 6 hours of screen on time with 70% battery usage (from 90 - 20%).
It's normal SOT for this phone right?
I attached my SS from the app. I use version 1.2.7-2 build 45.
Yeah yours are pretty normal. I have a similar results.
Maybe the 50 watt charging is degrading the battery at a rapid pace,
Maybe this app is not very accurate.
I've seen others complaining about this app with other phones but hopefully here it's just estimating one of the two batteries
andrejd1 said:
Yeah yours are pretty normal. I have a similar results.
Click to expand...
Click to collapse
Thanks for sharing. We have the same battery performance.
manus31 said:
Maybe the 50 watt charging is degrading the battery at a rapid pace,
Maybe this app is not very accurate.
I've seen others complaining about this app with other phones but hopefully here it's just estimating one of the two batteries
Click to expand...
Click to collapse
Pretty sure it's not because the rapid charging, if so the phone is a disaster.
The app is most possible reason.
smart_thingup said:
Thanks for sharing. We have the same battery performance.
Pretty sure it's not because the rapid charging, if so the phone is a disaster.
The app is most possible reason.
Click to expand...
Click to collapse
Here's hoping,I'm getting mine next week and I'm already very skeptical of the vooc charging,I've seen nothing from Realme or Oppo in regards to it's testing or how it affects the degradation of battery.Because of this and I want the battery to last a few years I will be charging with a 18w charger,using the vooc charger occasionally
manus31 said:
Here's hoping,I'm getting mine next week and I'm already very skeptical of the vooc charging,I've seen nothing from Realme or Oppo in regards to it's testing or how it affects the degradation of battery.Because of this and I want the battery to last a few years I will be charging with a 18w charger,using the vooc charger occasionally
Click to expand...
Click to collapse
At first I also skeptical about the Super VOOC charging, I think it will damage battery faster, especially because of heat while charging.
And then, turns out to be more make sense because it use dual battery. And with my experience using this phone, there's no heat problem while charging. Not from the hand feel and not from the system temparature reading.
Since the charging is super fast, I usually put the phone at idle for about 5 minutes to cool down the phone before charging and put on airplane mode while charging to prevent over hear and keep the battery as cool as possible. After several try different circumstances of charging condition, I think Super VOOC is doing just fine.
smart_thingup said:
At first I also skeptical about the Super VOOC charging, I think it will damage battery faster, especially because of heat while charging.
And then, turns out to be more make sense because it use dual battery. And with my experience using this phone, there's no heat problem while charging. Not from the hand feel and not from the system temparature reading.
Since the charging is super fast, I usually put the phone at idle for about 5 minutes to cool down the phone before charging and put on airplane mode while charging to prevent over hear and keep the battery as cool as possible. After several try different circumstances of charging condition, I think Super VOOC is doing just fine.
Click to expand...
Click to collapse
I'm sure it's safe and all very good but I still think it will be too difficult to maintain the battery and make it last a few years. I like to keep the battery between around 40 to 85 and it's not recommend to fully charge modern phone batteries aswell as not fully draining them,there is only so many cycles for the batteries lifetime,around 500 or so,
here we have two batteries but still that does not matter,
I will be using in and around 18w charger but might try my OnePlus charger to see if that is any quicker to find a happy medium
manus31 said:
I'm sure it's safe and all very good but I still think it will be too difficult to maintain the battery and make it last a few years. I like to keep the battery between around 40 to 85 and it's not recommend to fully charge modern phone batteries aswell as not fully draining them,there is only so many cycles for the batteries lifetime,around 500 or so,
here we have two batteries but still that does not matter,
I will be using in and around 18w charger but might try my OnePlus charger to see if that is any quicker to find a happy medium
Click to expand...
Click to collapse
OnePlus charger will give you VOOC charging. I think that will suit you.
smart_thingup said:
OnePlus charger will give you VOOC charging. I think that will suit you.
Click to expand...
Click to collapse
Yes should give around 27 to 30 watt charge,that would be perfect.Wil test it and see,getting phone tomorrow according to my national post
manus31 said:
Yes should give around 27 to 30 watt charge,that would be perfect.Wil test it and see,getting phone tomorrow according to my national post
Click to expand...
Click to collapse
Got phone today,the 50 watt charge is lightning fast,
My OnePlus 6T charger is also lightning,think it's about 27w charger. My 6T battery must have a problem as the charging has slowed over time on that. I'm only noticing again how fast the dash charger is on the X2 pro
Have been using Accubattery for few days now and have similar stats to you guys,48% battery health and estimated capacity of 1913mAh,
Maybe Accubattery can improve the software for these type of phones which have two separate batteries
have the same result. maybe an update with the app can result in a more accurate reading.
Guys it's normal, this phone has a battery made of 2 1950mAh cells that charge in parallel. This means that Accubattery (which reads the stats based on voltage and current) can only read a single cell charge.
I also read some strange comments here, so let's dismantle a myth: SuperVOOC WON'T damage your battery much more than normal fast charging. Having 50W on a single battery would be absurd, instead this power is distributed between the two cells, resulting in a charge of 5V and 5A per cell (pretty standard, 5V is super safe because it's the same as the cell voltage, and current is similar to other manufacturer quick charge currents). Having 5V input is also better for heat, because it doesn't need conversion (see Qualcomm Quickcharge which can input 5/9/12/15V).
Of course heat is the worst enemy of a battery life, but try not to use it while charging for those 25/30mins needed for a full charge and you'll be good to go.
I hope this clarifies things for people scared of using the boxed charger.
danypava said:
Guys it's normal, this phone has a battery made of 2 1950mAh cells that charge in parallel. This means that Accubattery (which reads the stats based on voltage and current) can only read a single cell charge.
I also read some strange comments here, so let's dismantle a myth: SuperVOOC WON'T damage your battery much more than normal fast charging. Having 50W on a single battery would be absurd, instead this power is distributed between the two cells, resulting in a charge of 5V and 5A per cell (pretty standard, 5V is super safe because it's the same as the cell voltage, and current is similar to other manufacturer quick charge currents). Having 5V input is also better for heat, because it doesn't need conversion (see Qualcomm Quickcharge which can input 5/9/12/15V).
Of course heat is the worst enemy of a battery life, but try not to use it while charging for those 25/30mins needed for a full charge and you'll be good to go.
I hope this clarifies things for people scared of using the boxed charger.
Click to expand...
Click to collapse
I was a bit apprehensive about the super vooc at the start but I've only ever used it since I got the phone. I will say it's so much more useful for my use a d I can literally charge it twice a day for 10 to 15 minutes each time.Phone does heat up quite a bit though,like it's warm every time I take it off the charge.
I'm just hoping it will be as quick this time next year and the battery holds out
danypava said:
Guys it's normal, this phone has a battery made of 2 1950mAh cells that charge in parallel. This means that Accubattery (which reads the stats based on voltage and current) can only read a single cell charge.
I also read some strange comments here, so let's dismantle a myth: SuperVOOC WON'T damage your battery much more than normal fast charging. *1 Having 50W on a single battery would be absurd, instead this power is distributed between the two cells, resulting in a charge of 5V and 5A per cell (pretty standard,*2 5V is super safe because it's the same as the cell voltage, and current is similar to other manufacturer quick charge currents). Having 5V input is also better for heat, because it doesn't need conversion (see Qualcomm Quickcharge which can input 5/9/12/15V).
Of course *3 heat is the worst enemy of a battery life, but try not to use it while charging for those 25/30mins needed for a full charge and you'll be good to go.
I hope this clarifies things for people scared of using the boxed charger.
Click to expand...
Click to collapse
*1 - could you elaborate on this here a tad bit more? What is the advantage of pumping power into two cells with total capacity of 4A/h put next to running a single cell with the same amount of power, with the cell being 4A/h too?
*2
This is simply not true. Mass production liPo cells are manufactured with 3.7V nominal voltage, 3V min. voltage and 4.2V max. voltage. When discharging a li-po cell your under-load voltage wouldn't zap anywhere outside the range of 3 - 4.2 volts at any point. If it did you would be saying ciao to that cell in the upcoming month.
According to what Ive learned past the last 12years of dealing with LiPos in my radio controlled aircrafts and, cell phones, smartphones, battery banks and so on and so on.. I am yet to see a mass production lithium cell whose "cell voltage" is 5 volts..? Sooo.. where do you get that from?
Do you have the kind of information that I am struggling to find on the inet right now? Such as who is the outsourced manufacturer of cells for realme? What is the grouping method of the two cells in our x2pro when charging - parallel or series?
The answer on the later two questions will paint it all as to what can we expect from the battery in our phones for the forseeable future.
*3
Heat is the result of charging and discharging the cell at higher than usually considered healthy charging and discharging rates. As far as Im concerned I don't think that realme are in possession of any advanced battery tech, and would be much more oriented towards trustworthy tested day in-day out type of chemistry in their batteries. Specially at the price point of my x2pro.
Taking into consideration that I can only conclude that realme are driving these cells at their maximum tolerance of charging current. I would be pretty entertained if the juice in this device is satisfactory past the 2 year mark. And shocked at the same time.
This has been spoke about before by oppo themselves and is available on the internet, it's 2x batteries at 2000mah each... The batteries are charged at the same time but independently and each battery is monitored at all times for heat etc... Total voltage is split between both to not apply to much pressure and as the batteries are 2000mah each it's obviously Parallel as you get total 4000mah.
Realme x2 pro has two batteries
Hey guys hope you are aware that realme x2 pro has 2 batteries of approximately 2000mah each and not one single 4000mah battery. That is what gives it the charging speed and the battery health is not affected because of the ingenious way VOOC works. You can watch the video on youtube. AccuBattery is not designed for phones with two batteries. Maybe we can expect compatibility for realme x2 pro in a future update.
Ab97 said:
Hey guys hope you are aware that realme x2 pro has 2 batteries of approximately 2000mah each and not one single 4000mah battery. That is what gives it the charging speed and the battery health is not affected because of the ingenious way VOOC works. You can watch the video on youtube. AccuBattery is not designed for phones with two batteries. Maybe we can expect compatibility for realme x2 pro in a future update.
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Click to collapse
Just declare it as 2000 mAh and you're good.

Question Long-term battery life and chargers ( Wired Vs. Wireless)

Hi there, I am asking about which charger is better for the long-term battery life
I am the kind of person that change my phone every 3 - 4 years or when the phone is no longer supported by security updates, so battery life is a concern here
I have my old wired charger of S8+ and I bought Samsung wireless convertible 9W charger, I usually charge at night while sleeping so I don't mind the slow speed of wireless charger, I only use wired if I am in a hurry and forget to charge the day before.
I googled about this, some people say wireless charger is bad, others say wired is bad
Which one would be better for battery life?
Thanks in advance and have all a great day.
Slow wired charge 40 to 80%. 10 to 18w slow charge is fine.
Personally I'd avoid anything that warms up the battery more and/or for longer than needed.
To learn more about batteries (all kinds of chemistries) go here.
In a nutshell:
1. The warmer the battery gets the worst it is. I don't remember the exact temperatures, but I think 20-25 °C is desireble.
2. The longer the battery stays warmer than desirable, the worse.
So wireless charging is the worst of both: warms up the battery higher than normal (especially when considering how little power actually goes through) and it keeps the battery warm longer because charging is slower.
So I would ALWAYS charge wired, usually between 20 and 80 %, using a slow charger as often as possible.

How To Guide How to extend your battery life (Xiaomi Scammed Us)

THROW YOUR 120W CHARGER AWAY.​
Get a charger for around 65W.​
Get a decently good brand. ( I'm using Anker, 65W Mi Charger is also good. )​
Anything below 30W would be too slow to charge your phone. Not really practical.​
Personally tested a 10W charger, did not work out for me as it doesn't give me the same battery performance.​
In my opinion, Xiaomi played us on this one. The 120W charger is a marketing gimmick. I don't think it charges the phone to 100% even though it shows 100%. Either that, or it messes with the battery calibration. As soon as I charge with a 65W charger, the battery goes back to performing properly. By that I mean, lasts me the entire day, and I still have 35-40% remaining the next day on medium usage like maps, streaming. On heavy usage, it still gives me great battery.
I'm 100% sure, you will notice the difference if you switch away from 120W charger as it will drastically extend the battery.
If you have already experienced the difference or made the switch, please do share your experience. On the stock xiaomi charger provided with the phone, the battery life is really terrible, the same usage gets me barely to the end of the day.
If you're still not satisfied by the drastic difference made by the charger only.
You can further go ahead and follow this guide from @spiral5 as well:
How to increase the battery life of the Xiaomi 11T / T Pro
Hello guys, I want to tell you about the adjustments that I have made to my Xiaomi 11T Pro and that have improved battery consumption, keeping the refresh rate of the screen at 120Hz. I would appreciate if you could tell me how it went...
forum.xda-developers.com
It will be simply because it is a fast charger, incredibly fast, and you can't completely charge lithium batteries fast, there is always a slow end stage that will take an hour or more regardless of how many watts the charger is. The last top off stage, or saturation stage on lithium cells needs by definition to take time and will charge at a lower current and it has to be slower.
They are showing 100% on fast charging, but that's only the bulk charge capacity with a lot of the saturation stage not done, so you don't get full capacity. The 100% indicator is saying you've charged as much as you can fast, but it might only be 70% actually full. If it is left on the charger, it will likely wait until the temperature has dropped then continue for an hour or so completing the saturation charge, all while still indicating charging is complete, but if you remove it from the charger the moment it hits 100%, then it's not the same 100% you'd get by leaving for a couple of hours.
If they indicated 100% correctly as being as charged as it can be, it will take 20 minutes on fast charge plus an hour or two for the saturation stage to be done, so doesn't quite sell as well!
Xiaomi are cheating somewhat by saying 0 to 100% in x time on fast charge, as the definition of 100% when fast charging is changed.
Personally I just charge over night at 5 watt, better for the battery and you get full capacity.
PhilipL2021 said:
It will be simply because it is a fast charger, incredibly fast, and you can't completely charge lithium batteries fast, there is always a slow end stage that will take an hour or more regardless of how many watts the charger is. The last top off stage, or saturation stage on lithium cells needs by definition to take time and will charge at a lower current and it has to be slower.
They are showing 100% on fast charging, but that's only the bulk charge capacity with a lot of the saturation stage not done, so you don't get full capacity. The 100% indicator is saying you've charged as much as you can fast, but it might only be 70% actually full. If it is left on the charger, it will likely wait until the temperature has dropped then continue for an hour or so completing the saturation charge, all while still indicating charging is complete, but if you remove it from the charger the moment it hits 100%, then it's not the same 100% you'd get by leaving for a couple of hours.
If they indicated 100% correctly as being as charged as it can be, it will take 20 minutes on fast charge plus an hour or two for the saturation stage to be done, so doesn't quite sell as well!
Xiaomi are cheating somewhat by saying 0 to 100% in x time on fast charge, as the definition of 100% when fast charging is changed.
Personally I just charge over night at 5 watt, better for the battery and you get full capacity.
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Click to collapse
Great insight, they should have mentioned it in a different way instead of saying it's 100% charged. But then that ain't gonna earn them any bucks.
Are you getting a good battery life on 5W? As when i was using the 10W charger and use the phone at the same time it would take forever to charge. And the battery sot wasn't as good as well compared to 65W sot for similar usage.
I also use 10w (5v 2A) and can get for about 8h of sot, charging time is in my case takes about 2:20h from 17-100%Its not that bad, and i prefere slow charging time anyway, i only use 120w when in hurry
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nousernamesorry said:
Great insight, they should have mentioned it in a different way instead of saying it's 100% charged. But then that ain't gonna earn them any bucks.
Are you getting a good battery life on 5W? As when i was using the 10W charger and use the phone at the same time it would take forever to charge. And the battery sot wasn't as good as well compared to 65W sot for similar usage.
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If you are using the phone at the same time as charging, you are of course using a chunk of that 5 watts to power the phone, so whilst your battery may not be discharging, there isn't much left over to charge it up.
I always charge overnight as I easily get a day if not a few days from a single charge as I'm not using it much currently as working from home, but if you need to top up during the day whilst still perhaps using it, you would need a charger with a bit more wattage.
Also note that whilst it may say 100% charged, that could represent anywhere from say 95% to 100% actual charge. This is because lithium cells can not be trickle charged, so when charging it will get to being a full capacity, then charging stops, the battery is allowed to discharge several percent before automatically being topped up again, and the cycle continues. So depending on where in that cycle you take the phone of charge, you might be really at 100%, but could equally be at 95%. Because people would complain if the true charge status was shown, i.e. people leave the phone on charge all night and its still only showing 95% in the morning simply because it's on the discharge stage of the discharge/top up cycle when they look at it, they would complain, so 100% is shown from say anywhere between 95% and 100% of real charge state. This applies to all devices. It is why sometimes you take your phone of charge at 100% and it seems to stay at 100% for some time, and other times it starts going down soon after you've unplug it from the charger. Google on their Pixels have an adaptive battery setting and use the alarm clock you've set to know when you are getting up, so they make sure they time that cycle so that you get the phone at a real 100% capacity.
Good thread fellas. Yeah 120w it's just a thing you should use when there's not another option or your in a real rush. And by using it your battery calibration might get confused.
It's as the OP mentioned, with 120w you can feel that your battery life is shorter than charging with lower wattages.
IMO and experience I calibrated my phone's battery (drained it to 0 let it turn off , leave it unattended for around 10 min, then charge it with a 10w while still turned off if possible. And leave it charging 1h more after it says 100%) and b ayer doing so my 11t pro finally became the 2-day phone it should have been from day one.
I personally prefer to charge mine with a 18w (1h20min) or a 22.5w (1h) during the day. 10w it's just for overnight, it's just to long 2h40min or more.
This might be the reason why Samsung nor Apple has not yet jump into bandwagon of 100w-ish charging. Even not to 65w. It just my hunch though. Still, 100w-ish charging might be life changing in certain situation. And if I recall correctly, the most ideal percentage to charge Li-On is around 80-ish, that might the actual percentage that we get if we charge to 100% with 100w-ish charger.
To be honest i tried 33w charger and 120w charger and battery performance for me is the same(4.5sot + 6 background yt music)
The thing is when u use 120W charger and battery go 100% you have to let it charge 5-10 min more because is not fully charged.
You can check with app called ampere(download from playstore)
Nikøs said:
To be honest i tried 33w charger and 120w charger and battery performance for me is the same(4.5sot + 6 background yt music)
The thing is when u use 120W charger and battery go 100% you have to let it charge 5-10 min more because is not fully charged.
You can check with app called ampere(download from playstore)
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Click to collapse
Please try a 65W charger from xiaomi or anker, i guarantee you the difference. Sot also depends on the usage, but there will surely be a drastic increase in the battery capacity.
And i completely agree to your point on trickle charging. But unfortunately, it does not justify the 4 hrs sot difference im getting after charging my phone through different chargers. 65W gives me 8 hours, whereas 120W full charge gives me around 4 hours.
I feel xiaomi really just did this as a marketing gimmick and did a half hazard job at it.
Li
PhilipL2021 said:
If you are using the phone at the same time as charging, you are of course using a chunk of that 5 watts to power the phone, so whilst your battery may not be discharging, there isn't much left over to charge it up.
I always charge overnight as I easily get a day if not a few days from a single charge as I'm not using it much currently as working from home, but if you need to top up during the day whilst still perhaps using it, you would need a charger with a bit more wattage.
Also note that whilst it may say 100% charged, that could represent anywhere from say 95% to 100% actual charge. This is because lithium cells can not be trickle charged, so when charging it will get to being a full capacity, then charging stops, the battery is allowed to discharge several percent before automatically being topped up again, and the cycle continues. So depending on where in that cycle you take the phone of charge, you might be really at 100%, but could equally be at 95%. Because people would complain if the true charge status was shown, i.e. people leave the phone on charge all night and its still only showing 95% in the morning simply because it's on the discharge stage of the discharge/top up cycle when they look at it, they would complain, so 100% is shown from say anywhere between 95% and 100% of real charge state. This applies to all devices. It is why sometimes you take your phone of charge at 100% and it seems to stay at 100% for some time, and other times it starts going down soon after you've unplug it from the charger. Google on their Pixels have an adaptive battery setting and use the alarm clock you've set to know when you are getting up, so they make sure they time that cycle so that you get the phone at a real 100% capacity.
Click to expand...
Click to collapse
Like i previously mentioned as well in the above post, trickle charging or that 5-10% of charge shouldnt make the difference im experiencing after switching chargers. 4 hours sot difference is no joke. Its literally half battery capacity.
I love the phone, but Xiaomi really messed around with us on this.
nousernamesorry said:
Please try a 65W charger from xiaomi or anker, i guarantee you the difference. Sot also depends on the usage, but there will surely be a drastic increase in the battery capacity.
And i completely agree to your point on trickle charging. But unfortunately, it does not justify the 4 hrs sot difference im getting after charging my phone through different chargers. 65W gives me 8 hours, whereas 120W full charge gives me around 4 hours.
I feel xiaomi really just did this as a marketing gimmick and did a half hazard job at it.
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Click to collapse
Unfortunately i don't have a 65w charger :/
I get 4.5 sot because i also use yt music for 6-7 hours in background + 5g all dhe time.
The problem i noticed is that when i use my phone after charging my battery gives me good sot (5 hour non stop gaming mlbb and still have 25% left). But if i charge at night and use the phone the next day the battery drain really fast (that's why i charge every morning before i leave home).
I'm not really happy with battery life to be honest but im really happy with charging speed
+ How you guys get sot 8hrs?. I never couldn't do that with my phones( old device k20 pro average 5hrs sot)
Nikøs said:
Unfortunately i don't have a 65w charger :/
I get 4.5 sot because i also use yt music for 6-7 hours in background + 5g all dhe time.
The problem i noticed is that when i use my phone after charging my battery gives me good sot (5 hour non stop gaming mlbb and still have 25% left). But if i charge at night and use the phone the next day the battery drain really fast (that's why i charge every morning before i leave home).
I'm not really happy with battery life to be honest but im really happy with charging speed
+ How you guys get sot 8hrs?. I never couldn't do that with my phones( old device k20 pro average 5hrs sot)
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Click to collapse
Even after switching away from 120W charger, if you're not seeing a drastic difference, then i recommend changing the chargers to something similar to what i own (anker) about 65W or a mi charger 65W (official). Because i personally experienced the huge battery life change, and i know this phone can give a 1.5 day battery life on medium usage. On heavy usage it lasts me easily the entire day (8hours sot easy). But usage may vary. And when i was using 120W charger, it was giving me 4hours sot, with the same usage. So i know, the phone has the capacity to do it.
Maybe it could be a non branded charger issue? I'm not sure. It should show quick charging when charging via the different charger as well that way you know its getting the juice it requires.
Rocking a Xiaomi 67W charger and so far not much difference. I'm using the phone out of the box, I am not switching back to 60hz since whats the point of buying it if you wont use 120hz. Lets see after a few more cycles.
EDIT: After using this 67W for 2 days now, battery life is the same. IT might not be the charger but going back to 60 Hz might be the reason some ppl had improved battery life. I will return back to 120W since I prefer the ultra fast charging while the phone stays cool at the same time (mine is at 40-41 degrees C and it charges around 20 minutes)
EDIT 2: Tried 60hz for a day, since I was out with family, it noticeably improved battery life even though I charged with the 120W adapter. Hopefully Xiaomi adds a dynamicswitch feature for us soon or a 90hz option
Pher- said:
Rocking a Xiaomi 67W charger and so far not much difference. I'm using the phone out of the box, I am not switching back to 60hz since whats the point of buying it if you wont use 120hz. Lets see after a few more cycles.
EDIT: After using this 67W for 2 days now, battery life is the same. IT might not be the charger but going back to 60 Hz might be the reason some ppl had improved battery life. I will return back to 120W since I prefer the ultra fast charging while the phone stays cool at the same time (mine is at 40-41 degrees C and it charges around 20 minutes)
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Click to collapse
I tried using my phone on 120hz for a day or two, i get like an hour less compared to 60hz i find a major difference in battery even with 120hz enabled.
Not sure why. But if it works, it works.
Also just to clear my experience, i never use this phone on 120hz, even when i initially was using the 120w charger. It has always been set to 60hz for me, as i like to save battery wherever i can.
Update: Using accubattery, when my phone reached 100%, its still taking in current around 1500-2000mah range (around 10-15w) and its trickle charging the battery. The estimated capacity when reaching 100% is around 2200 mah(times 2 since our phone is a dual cell battery) then letting it trickle charge for a few minutes (an extra 10) made the capacity to 2550(which is around 5100 mah) and by doing so I am easily getting 6-7 hr sot on 120HZ. It may be a marketing trick to reach 100% in an instant but leave it plugged in for an extra 10 mins or so to get more screen on time.
quite great battery life
Pher- said:
Update: Using accubattery, when my phone reached 100%, its still taking in current around 1500-2000mah range (around 10-15w) and its trickle charging the battery. The estimated capacity when reaching 100% is around 2200 mah(times 2 since our phone is a dual cell battery) then letting it trickle charge for a few minutes (an extra 10) made the capacity to 2550(which is around 5100 mah) and by doing so I am easily getting 6-7 hr sot on 120HZ. It may be a marketing trick to reach 100% in an instant but leave it plugged in for an extra 10 mins or so to get more screen on time.
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Click to collapse
Don't trust the apps. Find some real volt meter.
devvikram said:
quite great battery life
View attachment 5545329
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Amazing!
MIUI 13 by any chance?
I am on miui 13 official, had heavy battery drain on miui12.5, disabled miui optimizations and now everything is good
Edit: apparently the program that handles battery changed after disabling miui optimizations, maybe it's a bug related issue

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