Battery Degradation - OnePlus 7 Pro Guides, News, & Discussion

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
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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
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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

Related

Longest batterylife (8 times longer) information! *Easy, takes 30 seconds to learn*

If the battery is only charged to about 75% it will last about 8 times more discharge cycles then if it was charged to 100% every time. Which is pretty damn much!
100% charge gives 350-400 Discharge cycles.
75% charge gives 2400-4000 Discharge cycles.
Source and good read with more tips how to treat your battery good:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
I don't know of any app or kernel that does this automatically, if you know or can program one please update this thread.
Meanwhile we have to just unplug charger by ourselves at around 70-75%
Please press thanks and write a reply what you think if this information was usefull to you!:good:
Well, if it's true, it's a huge improvement for only 25%, we can perfectly last a full day with 75% of battery
This is really good battery info. Thanks.
My personal view on the matter is for 15 bucks, I'd rather pick up a replacement battery a year or two from now when I may need it and just replace the cell rather than work to keep my phone charged closer to 75 percent every day in order to see some of the par-charge benefit the article discusses. I'm not suggesting that should be your position.
Based on how I use my phone, starting nearly every day closer to 75 percent than a full charge, I'm guaranteed to run to shutdown many more days than I would if I accumulated the expected number of full cycles. There's enough indicators to tip you off when you reach end-of-life on your cell: you usually see very significant shortened battery life and/or big cliffs in useage like draining evenly say between 100 and 78 percent and then going from 78 to 60, and then even depletion again usually indicates cells failing. Point is batteries don't go from good to bad overnight.
My perspective after just very recently moving into an S5 from a RAZR Maxx that required a good bit of phone disassembly to get to that battery, picking up a $15.00 replacement and keeping my battery topped off is the way to go. :good:
I have never had to replace a phone battery, they have always lasted until I upgrade. Great read but it seems the author was mainly referring to laptop batteries.
kgyirhj said:
If the battery is only charged to about 75% it will last about 8 times more discharge cycles then if it was charged to 100% every time. Which is pretty damn much!
100% charge gives 350-400 Discharge cycles.
75% charge gives 2400-4000 Discharge cycles.
Source and good read with more tips how to treat your battery good:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
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Be careful with info from batteryuniversity.com. It is largely geared towards engineers using raw cells, not users of consumer devices. This leads to people making incorrect assumptions. For example you may read there about the dangers of discharging Li-ion cells too far. But your device probably (if the engineers have any brains) already builds in some buffer, and shuts off/refuses to power on if it's a safe level above that. It's hard for us to know what levels Samsung considers empty and full in comparison to the actual cells.
I'm not saying this is bad advice, just that it may not really make that much of a difference in reality, and it's tough to do in practice.
my girlfriends S3 is 2 years old now and battery lasts still the same long as it was new.
i think phones anyway doesn't charge the battery to 100% full capacity or even let it discharge to 0%
Anyone tested this to see if it works better for battery performance?
Maybe if I had something like a HTC One I might do that because you have to be like a freaking safe cracker just to get at the battery, but on S5 I'll just keep going to 100% and buy a new battery after 9 months because I am a heavy user and lose a lot of capacity within a year.
Be careful with info from batteryuniversity.com. It is largely geared towards engineers using raw cells, not users of consumer devices. This leads to people making incorrect assumptions. For example you may read there about the dangers of discharging Li-ion cells too far. But your device probably (if the engineers have any brains) already builds in some buffer, and shuts off/refuses to power on if it's a safe level above that. It's hard for us to know what levels Samsung considers empty and full in comparison to the actual cells.
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thanks for the great info mate .
your input was needed.
It's just click bait, chances of keeping the phone for 4000 cycles is 0 for me.

Battery mods have terrible battery life?

I've been using both the incipio offgrid, and tumi powerpack battery mods (both are wireless charging variants) and have noticed just awful battery life. from 100% it charges my phone up maybe 15-20 percent, and thats with the screen off, just streaming music. If I'm using the phone (just surfing the web or instagram) the battery dies in around 30-45 minutes, is this normal? I expected alot more out of these. I can just stare at the notification bar and watch as the battery drops, my software is up to date, and I was just wondering if this is normal? Is everyone else getting this awful performance? I expected way more for like 70-80 bucks each...
Sky's Divide said:
I've been using both the incipio offgrid, and tumi powerpack battery mods (both are wireless charging variants) and have noticed just awful battery life. from 100% it charges my phone up maybe 15-20 percent, and thats with the screen off, just streaming music. If I'm using the phone (just surfing the web or instagram) the battery dies in around 30-45 minutes, is this normal? I expected alot more out of these. I can just stare at the notification bar and watch as the battery drops, my software is up to date, and I was just wondering if this is normal? Is everyone else getting this awful performance? I expected way more for like 70-80 bucks each...
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This is not normal. While I don't have either of these, based on the reading I've done and reports I've seen from people who do, the Incipio off grid should be able to charge your phone up 50-75% when attached. Not sure if you have some crazy wakelock that's keeping your CPU maxed out all the time or what, but dying in 30-40 minutes makes no sense.
xxBrun0xx said:
This is not normal. While I don't have either of these, based on the reading I've done and reports I've seen from people who do, the Incipio off grid should be able to charge your phone up 50-75% when attached. Not sure if you have some crazy wakelock that's keeping your CPU maxed out all the time or what, but dying in 30-40 minutes makes no sense.
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When I got it to die In 30-40 min I was on a phone call and surfing instagram. Took the tumi out yesterday with 80% battery in it and had my phones screen off streaming music over Bluetooth. The phone charged up about 25% before the battery pack died. Any ideas on how I could improve the battery life? My moto mods manager is up to date and I don't get any prompts to update anything whenever I snap on the mods
I was surprised when I found this post, so I checked how many percent of battery do I get with a my incipio battery mod. I plugged the mod, my phone's battery was at 15% and the battery mod was at 100%.
Now the Incipio battery mod is empty and my phone's battery is at 50%. So it charged my phone by 35%.
Pretty disappointing for a 2220 mAh battery that costs almost 100€ ...
To me the best use of the mod is to snap it on when the Moto Z Play is fully charged and to chose the option to keep the phone battery at 80%. With normal use, i've seen the mod keep the phone at 80% for up to a day. To me the mod is not meant to charge the phone but more to keep it from discharging.
To me the idea of the battery mod makes no sense.
There is an Aukey 16000 mAh power pack with QuickCharge 3.0 available which boosts the battery in nearly no time. I paid less than 20 Euro.
Who needs such a battery mod with a Moto Z Play which lasts all day under heavy usage?
Who needs such a battery mod when power packs are big, cheap and fast?
Who even needs the power pack if you have a wall outlet with a QuickCharge 3.0 charger boosting the battery percentage in no time? I needed that power pack when the previous phone (Moto X Play) had some hardware defect making it lose power.
Edit: These questions are meant honestly. Are you living in the desert for several days and can't afford to carry a bag?
tag68 said:
To me the idea of the battery mod makes no sense.
There is an Aukey 16000 mAh power pack with QuickCharge 3.0 available which boosts the battery in nearly no time. I paid less than 20 Euro.
Who needs such a battery mod with a Moto Z Play which lasts all day under heavy usage?
Who needs such a battery mod when power packs are big, cheap and fast?
Who even needs the power pack if you have a wall outlet with a QuickCharge 3.0 charger boosting the battery percentage in no time? I needed that power pack when the previous phone (Moto X Play) had some hardware defect making it lose power.
Edit: These questions are meant honestly. Are you living in the desert for several days and can't afford to carry a bag?
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The battery mods are not particularly useful for the Z Play because if you charge every night, you have basically unlimited battery life. Battery packs are extremely useful for the regular Z, though, which has extremely poor battery life on its own. They're basically mandatory for the Z.
I'm shocked that battery mods can only charge your internal battery and can't be used directly (discharging the mod battery instead of the internal battery), the same way Thinkpads that have more than one battery can do. That makes the $80 (vs maybe $10 for a 2000 mah ravpower) cost all the more eyebrow-raising.
I'd love to use them as a way of preserving the sealed in internal battery's longevity, making the internal battery the backup battery and wearing out the easily replaceable, easily swappable mods instead.
fortunz said:
I'd love to use them as a way of preserving the sealed in internal battery's longevity,
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What do you think how a battery should be treated to prolong its lifetime?
This is a serious question. I'm not sure if charging cycles do matter these days. The point which makes batteries getting weak is the age. An additional battery will not help reduce the age.
Of course you should be careful not to be in extreme cold or heat. If the battery is below 30 percent, you should consider to charge it. You should not charge it again if it's over 80 percent. But trying not to use it seems not to really be helpful for the battery to have a longer life, although battery lifetime usually is given in battery cycles. At least this is my experience. If it does not get hot when used or charged, all batteries nowadays start getting weaker a bit after about 2 years, it gets really recognizable after 4 years, and when they are 6-8 years old, they get so low that they may not fulfill there purpose anymore. Cycles? Never recognized any influence for the lifetime. But one hot day with a usage above average where the battery gets hot may really cause a recognizable decrease in capacity.
If you have some source comparing battery lifetime for different use cases (storage, low usage, middle usage, frequent usage, under different conditions of temperature, fast charge and slow charge) I'd be really interested.
tag68 said:
What do you think how a battery should be treated to prolong its lifetime?
This is a serious question. I'm not sure if charging cycles do matter these days. The point which makes batteries getting weak is the age. An additional battery will not help reduce the age.
Of course you should be careful not to be in extreme cold or heat. If the battery is below 30 percent, you should consider to charge it. You should not charge it again if it's over 80 percent. But trying not to use it seems not to really be helpful for the battery to have a longer life, although battery lifetime usually is given in battery cycles. At least this is my experience. If it does not get hot when used or charged, all batteries nowadays start getting weaker a bit after about 2 years, it gets really recognizable after 4 years, and when they are 6-8 years old, they get so low that they may not fulfill there purpose anymore. Cycles? Never recognized any influence for the lifetime. But one hot day with a usage above average where the battery gets hot may really cause a recognizable decrease in capacity.
If you have some source comparing battery lifetime for different use cases (storage, low usage, middle usage, frequent usage, under different conditions of temperature, fast charge and slow charge) I'd be really interested.
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Same sources as you, personal experience and basic knowledge (battery life being measured in cycles). I'm not even completely worried about average aging, but out of a batch of millions of batteries, plenty will start to experience rapid discharge early, even without abnormal heat, not to the point of being completely dead, but certainly no longer tolerable. Today's phone batteries might actually tolerate heat better than in the past, having been built for quick charging, which is the hottest a sd625 seems to get.
I've read manuals and battery university and a few tech blog articles all of which have differing advice, just like you and me, but I have yet to find a source I find credible (based on diverse large scale testing not limited anecdotal evidence or in the case of manuals, insanely outdated nicad-era stuff). And, sincerely no offense intended, I'm unlikely to decide cycles don't matter and weight your anecdotal evidence over mine anymore than you'd weight mine over yours. But if you ever find a good source with those comparisons, I'd be pleased to check it out too.
tag68 said:
Who needs such a battery mod with a Moto Z Play which lasts all day under heavy usage?
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Because I'm a very heavy user of my phone and don't want to worry about power even if I can't get to a outlet during the day.
Who needs such a battery mod when power packs are big, cheap and fast?
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Because the bat mod is easy to slap on and keep on all the time (when I'm not using a different mod). Then I never have to worry about taking the pack with me or not or carrying the extra cable with me or not.
Who even needs the power pack if you have a wall outlet with a QuickCharge 3.0 charger boosting the battery percentage in no time?
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Because I don't want to have to worry about having the charger with me or finding a spot to charge.
I fully admit that I tend to be more paranoid about running out of power than I need to be, but I like to be secure knowing that I should have more than enough battery life, even if I can't charge overnight. I like to know that I can grab my phone at any point of the day and walk out the door with it without having to worry about taking a charger with me.
RedRamage said:
I fully admit that I tend to be more paranoid about running out of power than I need to be, but I like to be secure knowing that I should have more than enough battery life, even if I can't charge overnight. I like to know that I can grab my phone at any point of the day and walk out the door with it without having to worry about taking a charger with me.
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I quite like just not having to charge for three days. I have the battery mod which I use on the efficiency mode, and I got over a full day out of it. At the end of day three I had nearly 30% battery left. Probably enough for most of one more day.
The other thing for me is using wireless charging. I like just slapping my phone on a stand overnight when I do charge it. It charges slowly, yes, but it doesn't matter if I am charging overnight. I still have access to the quick charger if I need to get a full battery quick!
I use mine on my motorcycle where I'm riding for 10 hours a day. I'm at about 50% in 4 hours and dead by 7 or 8, so I'm hoping with the additional battery MOD that I can get at least 12 hours charge. I'm really bad about remembering to plug my phone in when I stop for a break!
@tag68 : dude I think you totally missed to read what @fortunz was saying, he was only pointing that he would like the Mods to be used as a primary source battery instead of being a "ultra-portable power bank".
Given that there is also a fraction of the power being lost in the form of heat, during charge/transfer, it is even more silly from Motorola not to have the battery used directly. I can say by the 25-35% charge from the Mods estimated from other users, that the efficiency is somewhere around 50%, HORRIBLE to say the least.
And yeah I was reading through both of your posts and good information was provided, although unnecessary friction used (not naming anyone).
I actually have kind of the same idea from @fortunz to prolong the battery life of my Z-play even with the mod just being a power bank.
Saying that the mods (~2220mah) charge your phone anywhere between 25-35%, I can actually take the top 25-35% out of my internal battery use and move it to the Mod.
So I can charge my phone up to 70% before going to bed, and then when my phone reaches 30% during the use next day, I'll just slap the mod.
I can allow myself a lot of variation to this, I will not be religious about it, the topic is to avoid hitting 100% charge, and instead, moving the wear of that 30% usage to the Mod.
According, to many articles, citing just one below, considering the depth of discharges and voltage levels, you guys might do the equation if you like, but according to the charts and theory:
charging my phone twice a day trying not to exceed 70%, will give me WAY more longevity run than charging up to 100% every day.
First charge will be from around 15% which is my normal deadline to around 70% with a wall charger, before going to bed.
Second charge will be from the mod from around 30% to around 60% (hopefully), which will give me portability while charging.
Total screen on time during the day, should be around 10% less, but well worth and I can definitely take the hit if getting more battery longevity as a trade.
Source:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Huh, it even makes sense when explaining to other people...
In re: friction, I took no offense from the exchange. Hopefully I didn't cause any either.
Good luck with your efforts. I have considered using this app to to stop charging early: https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002 Haven't started using it yet.
fortunz said:
In re: friction, I took no offense from the exchange. Hopefully I didn't cause any either.
Good luck with your efforts. I have considered using this app to to stop charging early: https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002 Haven't started using it yet.
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Sadly that application requires root... and I don't want to unlock the bootloader and then having to worry about SafetyNet...
For me SafetyNet is green using Magisk 12.0 as root solution, but that may change of course. But it would help for the battery.
Short rant about this topic: It is strange that the owner of a device can be forbidden to restrict the charging. You bought it, you should be able to do these things with it. Introducing SafetyNet is a bad idea by Google. Security should be made by algorithms, not by hardware. Using public key anyone may modify anything, and you can still assure the content to be trustworthy. There no need to prove the Android not to be modified, it is just a bad idea, unnecessary restricting the user. Owner.
tag68 said:
For me SafetyNet is green using Magisk 12.0 as root solution, but that may change of course. But it would help for the battery.
Short rant about this topic: It is strange that the owner of a device can be forbidden to restrict the charging. You bought it, you should be able to do these things with it. Introducing SafetyNet is a bad idea by Google. Security should be made by algorithms, not by hardware. Using public key anyone may modify anything, and you can still assure the content to be trustworthy. There no need to prove the Android not to be modified, it is just a bad idea, unnecessary restricting the user. Owner.
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Well said
Thanks for the tip! I'll have it mind!
At the moment I don't feel like unlocking the bootloader because I'm planning to use the moto Mods and these can't be used with custom ROMs yet, and I have no use for root other than changing the work mode on Greenify but it already works well enough in No-Root mode, so for me there is no true benefit.
A good resource for lithium batteries are rc helicopter forums. Helis use speed controllers of many tens of amps, drain the batteries in minutes versus days to low levels and charge them at high speed. What reduces their life is heat, overcharging the voltage or over discharging the voltage. They do not age if left in a partial charge. You can let them sit for years unused and they will lose very little capacity. If you only run them at 70%cycle, they last about 3000 cycles.
Well, that was weird.
Phone at 9%, mophie mod at 100%. Put it on, barely used the phone (even took a nap). About an hour later, the mophie mod is at 50%, but the phone actually went down to 8%. Took off the mod and the phone went immediately to 4%. Ouch.
Mod normally works fine. It'll keep the phone at 80% for most of the day just fine. Not sure what was going on.

When should you charge and unplug your battery.

For the last few years I've been reading that it's best to charge your battery at around 30-40% up to 80 or 85%.
Despite this possibly being the best practice, I don't see much point in paying for a $1200+ with a 4100mah battery and only using 40-50% of it's capacity.
So do you charge at around 10% and then go up to a hundred?
Generally I charge when I need to. I like to be topped up to a 100% when I leave the house. Maybe this isn't best practice. I could wait until it get to about 20% but I am wary about using all the battery cycles up.
PLUS I doubt you're going to get 6-7 out SOT if you charge at around 30 or 40%.
So what do you guys do with your s10e, 10s or s10 +?
Charge it whenever. Why the heck limit myself to 60% (say from 20-80% when even my usage pattern won't cause the battery to wear down to 80% capacity over that same time frame by my charging methods?
I also don't tend to keep my phones for more than a year, so wear level doesn't really affect me much
There is no way to "charge it best". Just use it and charge it when needed.
People take out of date "battery knowledge" from the NiCAD battery days and think that modern batteries develop "memories" and things and that hasn't been the case in decades... Just use it and don't worry about it. A battery is only gonna last 2 years at best anyways, so who cares if you shorten that by 2 months?
I normally charge my S10 from 25% to 90%.
The battery of my previous S7 Edge started suffering after almost a year and a half because I used to always keep it charging overnight.
If you don't intend to keep using your phone for more than a year, then don't limit charging your phone. Even in the case it wears off after a year, you can get your battery replaced by Samsung and start fresh again.
I charge mine around 20-30% all the way to 100% . Then unplugged it whenever I need to.
Is there a good "battery charge limit" app that doesn't require root or Magisk? I used Battery Charge Limit (https://play.google.com/store/apps/details?id=com.slash.batterychargelimit&hl=en_US) and it works great, but requires root privilege. It allows you to set upper and lower limits for charging, so you don't overcharge or let your battery drain.
Batteries don't overcharge. They hit 100% and then trickle charge...
Li-Ion batteries are durable and easy to maintain, you can't overcharge them and also the charging cycles doesn't matter - when you use the integrated Charing electronics in your device. You can charge it for a few minutes over the whole day without losing any capacity. Only over the time the capacity will get lower and lower, but this is an issue you can't avoid.
The charging controller in your device cares about voltage and loading current, never put a current on a Li-Ion battery without current limiter and voltage regulator.
But Li-Ion are very sensitive to mechanical damages and production faults.
Thanks for all the advice guys. Nice to see that most of us feel the same way.
Agree with the others. Technically, for optimum life, they say it's best to be between 40%-80%.
But really, just charge it when you need to charge it. Don't worry about numbers or percentages. If you're only going to own the device for a few years, no matter how you charge your device, it's going to have absolutely no affect on the battery over that time. It'll still be holding almost the same amount of charge in a couple of years regardless of which "charging strategy" you use.
TLDR: don't worry about percentage, charge it when you feel like it or when it needs it.
Go here and follow these principles. End off.
https://www.apple.com/in/batteries/maximizing-performance/
I always stay in the range from 40/50% to 75/80% on my Galaxy Note 8 which I had for 18mos.
Accubattery shows it still has 97% capacity.
https://i.imgur.com/rOabELz.jpg
Neo3D said:
I always stay in the range from 40/50% to 75/80% on my Galaxy Note 8 which I had for 18mos.
Accubattery shows it still has 97% capacity.
https://i.imgur.com/rOabELz.jpg
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Click to collapse
so you probably charge ur phone 6 times a day? no thanks
@SquireSCA I believe it's a narrow-minded approach to say that the phone battery will "last 2 years at best anyways, so who cares". I'm currently still rocking my Samsung Galaxy S5 which I bought brand new just over 5 years ago now on it's original battery. The battery is by no means like it was when it was new, but it will still last a day of light usage, and still runs perfectly fine with Android 5 installed. This preservation of the battery comes after years of charging it slowly on a charger outputting less than 1 amp and also making sure it rarely goes below 20%, spending most of it's time between 20%-80%.
If you you want to double your battery life you have to keep your li-ion battery between 3.7V and 4.2V. you have to stop the charge when the battery reach 4.2V so it means you have to keep your battery between 15%-85%.
---------- Post added at 09:24 AM ---------- Previous post was at 09:22 AM ----------
Personally I keep my battery between 15-85% which is sufficient to double it's battery life for a 3-year usage without big losses
Idk i heard ppl saying you should let it completely drain and recharge at least once a month. i charge at 15%. Oh well i only keep this phone for a year and then sell it.
It's mostly BS. There are hundreds of charging theories and no battery experts here so pick one and go with it. Pick the wrong one and instead of getting 8 hours on your batter 2 years down the road you'll probably only get 7.5 hours.

Question What is your 'a full charge will last about' number? (Hours)

Mine is 10. It's always 10 hours Every samsung device I have ever owned has gone done 10% an hour. From my first note to this device ! Are people getting longer?? I'm not talking about screen on time. ...
Assuming you have the Snapdragon variant. Exynos = 7/8 hours... still pretty impressive.
Mine says 2d 2hr. I never come close to using that, I typically don't charge it past 75%, nor let it get below 40%.
13 hours
One day, 14 hours.
Will that happen? Maybe in the land of pixies and rainbows. In real life, if I unplug my phone at 8am then when I go to bed around 11pm the charge is usually around 55-50%. That yields an actual time of around 30 hours (so, 1d 6h) which is actually not *that* far off from the estimate.
I spend all my time near wifi routers so that might help. If I use my phone a fair bit it'll be at 50% by bed. If I don't use it as much I can go through the whole day and still be in the 70's.
dscline said:
Mine says 2d 2hr. I never come close to using that, I typically don't charge it past 75%, nor let it get below 40%.
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Click to collapse
It's of course your choice to do so. I don't think being so conservative is necessary. I do a lot of work with electric vehicles and really most manufacturers are intentionally making 0% and 100% not the actual theoretical maximums. 0% for a lithium cell is right around 2-2.5v. It's very unlikely that the phone lets you get there. I'd imagine 0% is really being set somewhere around 2.8v. Likewise for 100%. If they have any common sense at all it's not being set to 4.2v fully charged but rather around 4V. Keeping a lithium cell between 2.8v and 4V doesn't hurt it. It's going much past that gets dangerous. Heat is not good for batteries, cold is REALLY not good for batteries. I have to believe that the phone won't let you charge it if it is too hot or cold. Terrible things happen to freezing cold batteries if you charge them. Of course, charging them too hot leads to a nice side effect if you were too cold or wanted a new house. So, I would say that temperature is one of the biggest considerations for battery life. If you can keep the battery right around room temperature always then it'll last.
But, I am curious. Has anyone taken voltage readings of the battery at full charge and low charge to see where the voltages are at? That might be interesting to see. I'll try to remember to check that.
Edit: looks like the cell chemistry for this phone is way different from what I'm used to in cars. Way higher upper voltage. Interesting. Still curious about the limits.
19 hours and 6 minutes. Interestingly enough, yesterday it was 20.5 hours. So it seems to be constantly changing.
Collin80 said:
It's of course your choice to do so. I don't think being so conservative is necessary.
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Click to collapse
Of course it's not necessary, but tests have shown that batteries last longer with frequent, shallower charges around the middle of their range. I have a charging pad on my desk at work, and at home. It's trivial to occassionally move it on/off the pad. On the rare occasion where I expect I might need a full charge I'll do it, but no sense in charging it up all the way when it's not necessary.
How to Prolong Lithium-based Batteries - Battery University
Discover what causes Li-ion to age and what the battery user can do to prolong its life
batteryuniversity.com
Mine is 1d 17h. Pretty happy with the battery life so far!
Wow. I'm always at 10 hours. Wonder what I'm doing wrong
Think it's pretty nice
This
1 day and 6 hours. Exynos WQHD 120Hz, no AOD.
My S21 Ultra Exynos lasts about 1 day and a half (36 hours) with aod always on and synced to my watch.
22 hours, 21 mins (Ex)
Exynos.
Disconnect at 07:30 am with 100% and can go until I finish work and then some with some battery. I think I get about 10-12 hours and get to 20%
Fluctuates between 24-30 hours
Exynos
2d 2h, Exynos, 120Hz, no AOD. Now im at 39% on day 3. So 3 standard workdays is pretty nice if you ask me. My old S9+ got me over 2 days with one charge safely.
1d6h. Exynos S21 Ultra with 120hz
What do you guys do with your devices that allows them to last such a long time? I'm done in 10 hours every day! Perhaps it's my email?

Question Different charging patterns

If i use the official fast charger .....charge up to 100% the next day I barely get 16 hrs and 3 hrs screen time..wireless charge slowly and I get 30 percent more .
Anyone else see a difference??
Uk unlocked s21u for reference.
You sure there are no other factors involved?: types of apps you ran, heat, etc.
mattlcfc said:
If i use the official fast charger .....charge up to 100% the next day I barely get 16 hrs and 3 hrs screen time..wireless charge slowly and I get 30 percent more .
Anyone else see a difference??
Uk unlocked s21u for reference.
Click to expand...
Click to collapse
That sounds interesting! Would love to look into this a little deeper.
Could you describe this in a little more detail please? Like when do you start charging, how long it takes with each method, what your usage pattern is like, and what you mean by 30% more (SOT, Standgy, or literal battery percentage remaining)? And any relevant screeenshots would be much appreciated.
Fast charging will not engage if the temperature is too low. It will remain disengaged for that charge cycle.
Charging is an electrochemical reaction that needs a certain temperature range to function properly.
Minimum start temp is 72°F but 82-90F is optimal.
Anything below 72F brings the risk of Li plating which will permanently degrade the cell.
Charging will also shutdown if the battery temperature goes too high.
blackhawk said:
Fast charging will not engage if the temperature is too low. It will remain disengaged for that charge cycle.
Charging is an electrochemical reaction that needs a certain temperature range to function properly.
Minimum start temp is 72°F but 82-90F is optimal.
Anything below 72F brings the risk of Li plating which will permanently degrade the cell.
Charging will also shutdown if the battery temperature goes too high.
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I don't think OP is talking about speed of charging. We're trying to discuss battery life with different speeds of charging.
enigmaamit said:
I don't think OP is talking about speed of charging. We're trying to discuss battery life with different speeds of charging.
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It should be near identical.
Android battery capacity sensing always left something to be desired.
Battery temperatures should be made the same when comparing.
Try comparing battery voltages rather than indicated %
blackhawk said:
It should be near identical.
Android battery capacity sensing always left something to be desired.
Battery temperatures should be made the same when comparing.
Try comparing battery voltages rather than indicated %
Click to expand...
Click to collapse
That is why we're waiting for more information about his experience before coming to any conclusions.
enigmaamit said:
That is why we're waiting for more information about his experience before coming to any conclusions.
Click to expand...
Click to collapse
Depending on how fast the battery is charging it may shutdown at a lower charge level to avoid overshooting the correct shutdown voltage.
Samsung is said to be very conservative with their charge curves... I wonder why
Samsung should be using graphene batteries by now. Instead of throwing all their resources at the Folds, which never have sold well, they neglect their bread winners. I just reamed them out over that today
blackhawk said:
I just reamed them out over that today
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You called them and asked them to switch to Graphene batteries?
nixnixnixnix4 said:
You called them and asked them to switch to Graphene batteries?
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Said they should be using them already, among other things. Before the 10+ was released there was speculation that it might have a Graphene cell, lol.
I was barely aware of this technology until a few days ago... it be cool and it's in use.
blackhawk said:
Said they should be using them already, among other things. Before the 10+ was released there was speculation that it might have a Graphene cell, lol.
I was barely aware of this technology until a few days ago... it be cool and it's in use.
Click to expand...
Click to collapse
Other than power banks, who is using them in their phones?
nixnixnixnix4 said:
Other than power banks, who is using them in their phones?
Click to expand...
Click to collapse
Xiaomi tells us about graphene batteries and the great challenge posed by the Mi 10 Ultra
Xiaomist A portal to share question and answer about smartphone , problems , news and ...
www.xiaomist.com
30% more seems to be a huge claim .
5%-10% could have been a margin or error.
I'll have to do some tracking and get some screen shots . I normally wireless charge overnight and it says 100 % every morning and I use 70 % battery on average . But 1 day a week I have to charge using the lead . I only have the "super fast" charger and lead and the next day the battery is always worse by quite a way . Dead by 19:00 hrs. Similar usage most days . Its as if on fast charge it says 100 % but is way down.
As said I'll do some more investigation.
mattlcfc said:
I'll have to do some tracking and get some screen shots . I normally wireless charge overnight and it says 100 % every morning and I use 70 % battery on average . But 1 day a week I have to charge using the lead . I only have the "super fast" charger and lead and the next day the battery is always worse by quite a way . Dead by 19:00 hrs. Similar usage most days . Its as if on fast charge it says 100 % but is way down.
As said I'll do some more investigation.
Click to expand...
Click to collapse
You know that you can toggle OFF fast-charging and super-fast-charging in the battery settings right?
Try that.
blackhawk said:
Xiaomi tells us about graphene batteries and the great challenge posed by the Mi 10 Ultra
Xiaomist A portal to share question and answer about smartphone , problems , news and ...
www.xiaomist.com
Click to expand...
Click to collapse
Samsung better listen then.
These batteries should last us 4 years easily. Anything less than that is a rip off.
nixnixnixnix4 said:
Samsung better listen then.
These batteries should last us 4 years easily. Anything less than that is a rip off.
Click to expand...
Click to collapse
With heavy usage the Li's are good for 1-2 years. Maybe better in a temp controlled environment.
I stream a lot and that's hard on the battery which is why I now say... live and let die
It's typical for batteries to last longer the slower they're charged. If you're using fast charging when plugged in, you'll see a decrease in the amount of charge that is held throughout the day, compared to wireless charging which is quite a bit slower.
mattlcfc said:
If i use the official fast charger .....charge up to 100% the next day I barely get 16 hrs and 3 hrs screen time..wireless charge slowly and I get 30 percent more .
Anyone else see a difference??
Uk unlocked s21u for reference.
Click to expand...
Click to collapse
Are you sure there aren't any other elements at play? Examples include the applications you used, the temperature, and so on.
SuperIronOut said:
It's typical for batteries to last longer the slower they're charged. If you're using fast charging when plugged in, you'll see a decrease in the amount of charge that is held throughout the day, compared to wireless charging which is quite a bit slower.
Click to expand...
Click to collapse
So you're saying if one battery is slow, one is fast charged, both to 3.2 volts, the slow charged one will yield mAhs.
Unless the battery is degraded I have my doubts that it be a significant difference.

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