Database Develop

Smaller Battery Capacity in Samsung Notes 8 F (European)

Hi all ! I have the Samsung Note 8 F version bought from pre-order. I have noticed that after the last update the battery of the phone is much less and above it gets warmer faster. I was curious about the capacity of the battery after a few months of normal charging without a fast charge from 20% to 100%. I read on the live battery topic about fg_cycle and fg_fullcapnom. Now I have 80 cycles with 3130 mAh capacity. I wanted to check this out and I bought the Stick Charge Meter Keweisi. I downloaded the phone at 1%, I close it, attached the stick and started charging. After 2h the LED turns green and the displayed battery charge is 2921 mAh. My question is why so little? Even I have lost in 5 months of using 300mAh or the batteries have a lower value than the declared one. Thank you!
LE:Sorry for my english!

have 2 F models and can't say I've noticed much difference in either of them, haven't done exact measurements though but both always running high performance mode and easily last a 16 hour day with regular 8 hour on screen time, what I have noticed in al my notes since the Note 2 is that after a while the first 10% seems to drop quicker from 100 to 90 but overall very stable, guessing that it is the phones battery management doing that

I have 4h sot with all on but maybe lost capacity fast this new generation of battery on S8,Note8?
Boss of Samsung mobile say battery lost 5% after 2 years of normal uz.Really?

Try checking with Accubattery app.
Sent from my SM-N950U using Tapatalk

Here is my exynos version battery info.

Here's mine.
Sent from my SM-N950U using Tapatalk

I also tried AccuBattery.In the application I had 3250 mAh.The calculation method used by this application is erroneous. If you load up to 80% or less will lower your value and if you drop to 100% in time will jump 3300 mAh. You can not check the battery capacity with the phone turned on because it is logical that there will be more consumers and will enter more mAh when charging. I will do a test with this stick charge meter but with the phone open and sure there will be more mAh to the situation when you have the phone closed. AccuBattery recommends that the phone be charged for a real appreciation to be carried on an airplane.

Hi. I have the European dual SIM version of Note 8 SM-950F and also noticed this. Don't know what to do. Here's my AccuBattery info:

We have tested the battery capacity today with the phone open. I downloaded it up to 1%, I installed AccuBattery and connected it to Stick Meter Keweisi. When I made the green LED I pulled the phone from the charger. I mention that as long as the phone was loaded I did not walk to him. I attach the result.I notice the difference between Stick and AccuBattery.

What build are you on? Just thinking if sammy is messing/patching with charging/discharging limits due to the stupid deep discharge?

I have an European version note8.
Accubattery says 3062 mah.
Fg_cycle is 81 and fg_fullcapnom is 3025.
I've had the phone for 4 months. When I bought it fg_fullcapnom was 3250 mah
Is it defective?

I have exynos Note8 F with vers.N950FXXU3BRA8.

@PlutoDelic,everything that's possible. I can not believe you can lose 300 mAh in 5 months with normal loads.

https://forum.xda-developers.com/galaxy-note-8/how-to/note-8-battery-fgasoc-fgfullcapnom-t3903417
Check this out!

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.
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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
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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.
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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
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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.
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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.
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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.
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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.

Battery Degradation

So I got my phone when it came out. Wrap charged at home and slow charged(2.1amp) in car. A year plus later accubattery says I've degraded 12% about, about same when I had my Samsung Galaxy s8 plus

Just wait for at least 20-30k mAh total charge at first I started with different values, now, after +80k, i got this.
I think we can keep it until something like 80%, I mean, it is like if you could charge your phone to only the % accubattery shows, if you get for example, 90%, you can only use a real 90% of your full charge, I get 35m sot with 10%, so I lost aprox 40-45m sot due to degradation.
Don't worry, Android 11 could get better battery life.

So your about same, I had about 88,000 % but I just installed RR rom. I also noticed after 90% it takes a lot longer to charge, I know after 90 it's not the full wrap charge speed but it takes like 20 mins or so to get 100

Funny....I just installed AccuBattery a few days ago to measure the same thing. I got my phone in March 2009, and attached are my stats.

March 2009? What phone is this? The very first HTC Google phone? If so, are you willing to sell this phone? 11 years and only 12% degradation...that's phenomenal.
On a different note, I really don't thing the battery design capacity is true to it's word. I recently changed my battery to a new one and it was starting at 96%. It's all a farce

amirage said:
March 2009? What phone is this? The very first HTC Google phone? If so, are you willing to sell this phone? 11 years and only 12% degradation...that's phenomenal.
On a different note, I really don't thing the battery design capacity is true to it's word. I recently changed my battery to a new one and it was starting at 96%. It's all a farce
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You know....I was trying for a snappy comeback for my typo, but I realized that I messed up the year AND the month. I got the phone in September 2019. Please don't ask about March. Not sure what I was thinking there.

AarSyl said:
You know....I was trying for a snappy comeback for my typo, but I realized that I messed up the year AND the month. I got the phone in September 2019. Please don't ask about March. Not sure what I was thinking there.
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Hahahah..no worries comrade! All good and dandy...hope the COVID situation there is getting better! Stay safe.

amirage said:
March 2009? What phone is this? The very first HTC Google phone? If so, are you willing to sell this phone? 11 years and only 12% degradation...that's phenomenal.
On a different note, I really don't thing the battery design capacity is true to it's word. I recently changed my battery to a new one and it was starting at 96%. It's all a farce
Click to expand...
Click to collapse
I believe it is possible that OnePlus pre-caps charging to 80% or so of the battery's full, true capacity to prevent fast degredation, then uses software to calculate percentage with 100% being 80%. If this were the case, it would explain people using AccuBattery seeing degredation almost consistently at like 10-15% - because the phone simply won't charge that far, so the mAH additions from charging just don't add up to 4000mAH.
To add, this isn't a bad thing at all. This isn't false advertising or anything, as this would be a feature done to prevent batteries from degrading at rapid speeds.
I don't have any proof this is the case, though. Just makes sense to me. I do recommend only using the warp charger to top off during the day, and charging with a regular usb-c charger otherwise, as the warp charging speed is actually bad for the battery life in the long run.
It is fact, though, that charging from 80 to 100% requires significantly more voltage (iirc) than the previous percentages. Think of it like trying to fill a jar to it's limits - as you put more in, you have to shove things in harder and harder , until its mostly full, where putting any more in is getting difficult as there's hardly any room left. This is obviously terrible for not only the battery but also the charging port and the like.

Well after a year you can't expect it to be like brand new. Worrying to much over little things that don't matter to actual life..,.

Ruvaldak said:
I believe it is possible that OnePlus pre-caps charging to 80% or so of the battery's full, true capacity to prevent fast degredation, then uses software to calculate percentage with 100% being 80%. If this were the case, it would explain people using AccuBattery seeing degredation almost consistently at like 10-15% - because the phone simply won't charge that far, so the mAH additions from charging just don't add up to 4000mAH.
To add, this isn't a bad thing at all. This isn't false advertising or anything, as this would be a feature done to prevent batteries from degrading at rapid speeds.
I don't have any proof this is the case, though. Just makes sense to me. I do recommend only using the warp charger to top off during the day, and charging with a regular usb-c charger otherwise, as the warp charging speed is actually bad for the battery life in the long run.
It is fact, though, that charging from 80 to 100% requires significantly more voltage (iirc) than the previous percentages. Think of it like trying to fill a jar to it's limits - as you put more in, you have to shove things in harder and harder , until its mostly full, where putting any more in is getting difficult as there's hardly any room left. This is obviously terrible for not only the battery but also the charging port and the like.
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All your points are very valid although my contention is not that. It's that a brand new battery (so brand new that it was installed at the service centre) had a life of 96%. This was shown in the oneplus diagnostic app; so where really is the 4000 mAh when a brand new itself starts at 96%

I suspect accubattery is not so accurate. Sure he can do some math to guess the actual capacity but who knows how close it is to the real thing.
One thing here: the battery is considered discharged at around 3.3 volts. This is just to protect the battery, but also it's around 5-7% capacity I'd say. Full discharge for li-ion is around 2.8-3.0 volts, but it's bad to discharge it that much.
So in conclusion, even though your battery has 4000mah, you never get to use it at it's maximum rating because that would damage the battery and render it useless in far less charge cycles than normal.

I would say a better measure is the OnePlus diagnostic app... It lists the degree of degradation under its output

Well I did accubattery when I first got phone, and it showed 3900. Ubreakifix tear down then confirmed that was the actual capicity because in the USA you are allowed to round just like diet should have no sugar but there is zero. What really makes you notice the Degradation is when fast charging takes longer to 100

djhulk2 said:
Well I did accubattery when I first got phone, and it showed 3900. Ubreakifix tear down then confirmed that was the actual capicity because in the USA you are allowed to round just like diet should have no sugar but there is zero. What really makes you notice the Degradation is when fast charging takes longer to 100
Click to expand...
Click to collapse
So the opposite of what you said is true. A battery with a larger capacity or less degradation takes longer to charge to 100% because the kernel and software slows down the charge for the last 10-15%. The less capacity you have the less time it takes to hit "100".

I know the charge slows down after 80%, the closer to 100 the slower. When phone was new it took like 10 to 15 mins later to go from 90 to 100. Now it's taking 15 mins to go from 92 to 95. Having note 5 previously the next Degradation step is when over all charging takes even longer and the battery life is shorter

I don't even worry about battery degradation. I put a wireless receiver on my OnePlus and have wireless charging everywhere. My phone is always around 80 to 100 percent.

I'm a heavy phone user and using accubattery on this phone for a long time now. Got my phone in June 2019 and based on 636 sessions, it shows battery health at 90%. Probably because
1. I haven't charged my phone more than 80% for about 70% of sessions.
2. Because of the large data AB has, it has more accurate estimate.
3. I read that the health section itself is not accurate.

Here's mine (got it second hand in March 2020)

Should I be concerned? I just got the phone back in March new from TMobile

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.
Click to expand...
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

Delete

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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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.
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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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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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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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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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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

Question Low estimated battery capacity

I have been using my brand new Tab S8 5G for 8 days or so. I have AccuBattery installed. The estimated battery capacity has been very low from Day 1. Currently I get:
Battery Health 87%
Estimated Capacity 6759mAh
Design Capacity 7760mAh
Based on 31 sessions 1031% charged for 69688mAh
I understand it takes a few days for AccuBattery to function accurately, but I think it's been enough. The design capacity has been automatically measured and already adjusted to a lower value than what Samsung advertise (8000mAh). I've also installed 3C Battery Monitor app, but the estimate is very similar (3718). I have bought 2 other (non-Samsung) android devices in the past few months, but their estimated capacities are much closer than 100%.
Has anyone expericed the same? Or do you think mine is a bad lemon and should be returned? Any insight would be much appreciated! Cheers.

Are you charging to 100% or just 85% (battery save option). If you charge up only to 85% then it is accurate.

Thanks! That's a very good question. I have used the 85% charging limit option for a couple of days but left it off for the majority of time.
But wouldn't it be the same from AccuBattery's point of view if you used the option or not, as the tab tells the app 85% as 85% not as 100%? (or maybe my assumption is wrong).
I have since updated AccuBattery (which cleared all my history!) and started self- recalibrating the app as their website suggests (you go down as low as you can, and start charging until drawing ampere really finishes at over 100%). After a few iterations, hopefully the app will show more accurate info. (Or not, I will just come terms with it!)
https://accubattery.zendesk.com/hc/en-us/articles/213575425-How-to-manually-benchmark-your-battery-health

İ think accubattery calculates with the Design capacity of the device, with the the Option to charge up to only 85% you would have charged up to 6800mah vs. 8000mah 100%. But i could be wrong too

Just not to open another thread. I have a similar situation with my tab s8+. All apps that do something hardware/battery related report the battery to be 9800mah and not the Samsung claimed
10090.
As for now I'm letting sccubattery do its reading, but so far battery life has been ok for a tablet with high end Specifications. On average I get 8 to 9h of SoT on average not very demanding usage.

Yes my S8 has also a considerable difference between Samsung's advertised battery capacity (8000 mah) vs the capacity apps like AccuBattery read (7760 mah). That's probably their way to prevent users from overcharging their devices.
On top of it, I have also found that my tab can go quite a bit after showing 100% charged. Following AccuBattery's re-calibrating (re-benchmarking) method l mentioned earlier, in one charging episode I saw my tab going up to 8700 mah or so until it started showing 0 or negative charging values about 40 mins after it showed 100%. Having overcharged my tab a few times this way, AccuBattery now shows about 100% for battery health. Obviously this isn't a good way to charge your battery in terms of its longevity, but it might help to calibrate your new device with a battery app. When the % reaches 100%, the estimated capacity on AccuBattery is normally much lower, something like 6700 mah, as I initially got. I need to do more tests, but I find the leeway Samsung spare is a bit too much.
Interestingly, I have also found quite a bit of variability in this 'fake 100% battery' setting across different manufacturers (or at least different devices). I am applying the same recalibration process on my Xiaomi Pad 5 Pro and OnePlus 8T. They are both about 9 months old. My OnePlus behaves somewhat similarly with my Tab S8, showing about 10% extra capacity after 100%, whereas my Xiaomi really stops charging when it reaches 100%.

Hey. This is my stats on my S8+. I recommend trying to completely discharge the battery to 0%, charge to 100% and wait until current is 0 mA. Do this min 3 times in row. Then you will get a more accurate reading