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[Q] First charge

Hey, I just got my nexus 5 today and have been using it for a couple hours. I've always been told to dicharge new phones to about 10% and then fully charge them for 8-10 hours straight, but I'm starting to think that it only apply for old battery models. Do you think I can charge it for maybe 2 hours and then use it without damaging the battery life potential, or is it better do do full discharge/charge? Thanks.

I think you answered your own question. No need to completely charge
Sent from my Nexus 4 using Tapatalk 2

Whoever told you that was wrong, even many years ago.
These are lithium batteries, they have no memory.
I'll copy-pasta one of my very long posts on this I made a while back:
1. Charging is what reduces the life of a lithium ion/polymer battery. Batteries are usually rated between 700-1000 charge cycles while keeping 90% of their capacity.
2. Charging 0-100% counts as one cycle. Charging 80-100% 5 times counts as one cycle.
3. Leaving your phone on the charger after it is charged has the potential to reduce battery life, although this is less of a problem with newer devices as they often disconnect the charging circuit until the battery drops below ~95%. Generally only an issue if you leave it on the charger for 24+ hours.
4. Lithium batteries do not require any conditioning.
5. Most lithium devices arrive with ~40-50% battery life remaining, because this is the optimal charge level to store a lithium battery for long periods (such as sitting on a store shelf for months).
6. Slower charging maintains the battery's overall lifetime capacity better than fast charging. This is likely why the HTC One does not have Qualcomm's Quick Charge enabled. It's debateable whether you'd notice the effects over the typical lifetime of a smartphone, however (2 years).
7. Not exactly related to lithium but just in general: smartphones (and tablets, etc) have charging circuits that only draw a certain amount of amps regardless of the number of amps the charger provides. Using a 3.1 amp (tablet-level) charger is not going to significantly increase the speed at which your phone charges. Most phones only use between 0.8 - 1.2 amps. Anything over that is overkill.
8. Storing a lithium battery at 0% is really bad for its lifetime capacity. Running it to 0% generally isn't recommended all the time, but a few instances won't hurt it.
9. Recharging from 0-100 doesn't make your battery run longer. It can, however, reset Android's battery level stats so that it can more accurately state the battery level.
10. Charging from ~95% to 100% takes a long time because it must do a trickle charge. Maxing out the battery like this can reduce overall lifetime capacity, but generally not enough to matter. You'll see this impact more often in larger applications of lithium batteries (like cars).
11. Heat is the #1 killer of lithium battery capacity. The chargers are designed to regulate the heat of the battery to keep them from getting too hot for two reasons: explosions and reduced capacity. The former is obvious, but the latter isn't as much. If the battery is constantly running in a hot environment, especially when charging, it will kill the battery much faster than anything else listed here.

Alright, thank you very much.

So I guess my battery is dying right? I get some very crap battery life now

I got this phone in January 2018. So, at this point it is almost 3 years old (just over 2 years and 9 months) and the battery life is pretty appalling now. I get perhaps half a day with a full charge. The main issue seems to be turning on WiFi/Data. As long as the WiFi is off which is usually in the night, the battery drain is relatively minimal. But the moment I turn WiFi on in the morning, the battery drains like crazy regardless of what I do with it. I usually just let it sit on my desk doing mostly nothing. I stay at home 24x7 nowadays due to the Covid-19 lockdown, and work from home. So no poor or uneven network signal. In terms of regular usage, it is a few minor phone calls via WiFi mostly, and a bit of solitaire games for an hour or so.
Take a look at the screenshots of the battery drain and life. Is there something I can do to enhance the battery life of this? Make it drain less with WiFi?
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There is also a battery replacement service here in London for a reasonable £60. I am wondering if I should do that or simply buy a new phone as this phone has anyway reached the end of life software support.

If it was me, I would be getting a new phone. Almost 3 years old. Time for a change. I've got the 4XL, but you could easily move to the new 4a, or 5 series. Good luck with your decision.
Sent from my Pixel 4 XL using Tapatalk

Sadly I am just not impressed with the new Pixels. The idea of having a weaker, less power hungry CPU and a bigger battery is nice, but the price is just unreasonably high. I wish it was cheaper especially given the competition. I have been searching for my perfect next phone and I think I should switch to something new soon as well. My top priority now is a decent price and a great battery.

The new P5 has a 4080ma LiPo battery. Haven't read much about the difference between LiOn and LiPo batteries. Not easy finding the perfect phone. Best of luck.
Sent from my Pixel 4 XL using Tapatalk

Here is a nice comparison between Li-ion and Li-Po batteries: https://www.androidauthority.com/lithium-ion-vs-lithium-polymer-whats-the-difference-27608/
Seems like Li-Po has low self discharge so it will hold a charge longer. But also has shorter life span, so I am guessing fewer charge cycles than even the current batteries. Interesting but unfortunate drawbacks. Oh, I wish for the day when we make a true battery breakthrough and have batteries with insane charge density in tiny packages and great life spans! Some day!

If I were you, I would get a battery replacement. No need to upgrade, especially when the price for the new pixel 5 is exceedingly high and disproportionate. I would then install a custom ROM so that you can get the latest security updates. That's what I'm going to do, I will wait for the next Pixel generation. If it's not any better, I may hold out longer. This is a fantastic phone that works ridiculously well despite the years, and we should avoid falling into needless consumerism. Just my two cents...
Enviado desde mi Pixel 2 mediante Tapatalk

I am considering that as well. I am not thrilled by the options I have at the moment. I like that the Pixel 2 is nice and small and it works well for my everyday use except the battery. And the battery is also not a big concern at the moment as I am mostly at home and can keep it charged regularly. And if I go out, I always take my battery pack with me to top up the phone if it goes too low. I am thinking I will continue with this for more time and even avoid a battery replacement, which will save me money and avoid any potential damage to the phone due to a poor job of replacing the battery.

What Android are you running, 11? Mine had horrible battery life, like 50% in 15 minutes because of an issue with a radio app on my phone

I am on Android 11. I just uninstalled a bunch of apps and the idle drain with WiFi on has reduced significantly. I will check how the battery life is now.

By chance, is your wifi and bluetooth scanning enabled in Location? That scanning can drain the battery.
Sent from my Pixel 4 XL using Tapatalk

WiFi scanning was on but not bluetooth. I will continue to track the battery life.

I got my Pixel 2 in November of 2017; I haven't noticed a significant decline in battery life, although it does seem that Android 11 is a lot more battery hungry, especially on standby.

This might be due to Android 11. The battery life is horrible. I also thought the same thing, bought a new battery and turns out it's a software issue.

Update: So I did end up putting in a new battery for my Pixel 2. It cost me £60 to do so here in London via iSmash, the official authorized repair partner. Given the retail price of the battery is around £10, the labour cost was £50 which is worth it as I would have damaged the phone if I tried it myself (I nearly did that with an old Droid many years ago).
So I got it repaired on 1 Dec. I have been testing the battery for a week and I do feel that the battery life has improved. I now have to charge only once a day or so after moderate use, kind of like what it was at the start. I do feel that perhaps the Android 11 update is still causing more drain than normal however, but still better than before.
I am using the AccuBattery app and before replacing the battery, the app approximated my battery health at around 1800-1900mAh compared to the design capacity of 2700mAh. Now, it is approximating it at around 2600mAh if I consider the latest charge cycle from 14% to 100% (+86% took about 2251mAh). So I am guessing that the battery replacement was well done and successful. I am also able to make my phone last longer even without turning on battery saver all the time. However, there is still some idle drain when I don't do much but have WiFi/data turned on. I am attaching screenshots. I wonder if this is software issue due to the latest Android 11.
So now, I have 2 questions:
Is there a better app than AccuBattery to get a sense of battery life/capacity? AccuBattery takes many charge cycles to get to a decent estimate.
Is there sometime I can do regarding the battery drain due to the latest Android 11 update? I believe lot of people have raised this complaint and I too noticed an increase in battery drain after the Android 11 update, despite the aging battery. And I seem to notice the same drain with the new battery now.

V0latyle said:
I got my Pixel 2 in November of 2017; I haven't noticed a significant decline in battery life, although it does seem that Android 11 is a lot more battery hungry, especially on standby.
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Click to collapse
Also, that is pretty amazing! You used your phone for 3 years and still did not notice significant decline in battery life!? Do you charge more carefully, such as only charge to 80% or 90% and not let it drain below 30-40% or something to extend the lifespan of the battery? Also, do you use the phone very sparingly, or is it not your daily driver? Do let us know what you do and how you managed to take care of the phone so well it lasted this long. That would be very useful information!

Meh I wouldn't have updated it.
Scope storage sucks.
If it's an LI:
Limit charges to 80% or at least stop at 90%
Don't regularly discharge below 20%
Li's like small frequent midrange charge cycles; 40-65% is ideal.
Avoid high temps especially with a fully charged cell; high cell voltage and high temperature degrade the cells much more rapidly.
Never charge a cold battery; 72-90°F is best.

litetaker said:
Also, that is pretty amazing! You used your phone for 3 years and still did not notice significant decline in battery life!? Do you charge more carefully, such as only charge to 80% or 90% and not let it drain below 30-40% or something to extend the lifespan of the battery? Also, do you use the phone very sparingly, or is it not your daily driver? Do let us know what you do and how you managed to take care of the phone so well it lasted this long. That would be very useful information!
Click to expand...
Click to collapse
Sorry for the late answer.
I am a heavy user, when I'm at work I generally have my phone on the charger. I plug it in all night too. Standby battery life is pretty good; Android 11 does seem to be more battery hungry, so if I don't use my phone at all, I might get 30 ish hours of life. But, with realistic use, it will probably last me around 8 hours, with the amount of video streaming I do.
I have never paid attention to charge cycles. Phone software handles that, and you'll find that most li-ion battery management only charges to about 80% of chemical capacity to extend the life of the battery. Tesla battery packs will last up to 500,000 miles, because the management software limits the usable charge to about 40% of the cells' actual capacity. Phone software does a similar thing, where 0% is actually about 40% of the battery's capacity, and 100% is actually about 80%. Your phone lives its whole life in that 40% of usable capacity. Maintaining a state of charge higher than 80%, or discharging below 40%, shortens battery life.
I'm not going to pretend that my battery still performs like new, and I wouldn't easily be able to determine that anyway - with the age of the battery and the software updates, it will never be the same as it was.
If I don't **** off at work, or I am not antisocial when we go over to friends' houses, it'll last quite a while, but given my heavy use I tend to keep it on a charger anyway.

blackhawk said:
Meh I wouldn't have updated it.
Scope storage sucks.
If it's an LI:
Limit charges to 80% or at least stop at 90%
Don't regularly discharge below 20%
Li's like small frequent midrange charge cycles; 40-65% is ideal.
Avoid high temps especially with a fully charged cell; high cell voltage and high temperature degrade the cells much more rapidly.
Never charge a cold battery; 72-90°F is best.
Click to expand...
Click to collapse
Don't have to worry about this. Firmware and software manages battery state of charge. Use it normally.
Also, the "proper" temperature for a lithium battery is between 40 and 80 degrees F. They will retain a better charge at room temperature because low temperature increases internal resistance, but you are not likely to damage anything. Charging, or maintaining a high state of charge at temperatures above 90 degrees shorten the life of the battery.

V0latyle said:
Don't have to worry about this. Firmware and software manages battery state of charge. Use it normally.
Also, the "proper" temperature for a lithium battery is between 40 and 80 degrees F. They will retain a better charge at room temperature because low temperature increases internal resistance, but you are not likely to damage anything. Charging, or maintaining a high state of charge at temperatures above 90 degrees shorten the life of the battery.
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Click to collapse
While you can use LI cells in low temps without harming them, charging them at low temps Li plating can occur which will permanently degrade them. The temp I saw stated was >80F.
Others stated standard temp for charging/testing Li's for longevity was a temp of 72F; I wouldn't go much below that when starting a charge.
&
Somewhere below 50-65F Samsung fast charging will revert to slow charging to protect the cell.
You won't find that in literature but you can observe it.

V0latyle said:
I have never paid attention to charge cycles. Phone software handles that, and you'll find that most li-ion battery management only charges to about 80% of chemical capacity to extend the life of the battery. Tesla battery packs will last up to 500,000 miles, because the management software limits the usable charge to about 40% of the cells' actual capacity. Phone software does a similar thing, where 0% is actually about 40% of the battery's capacity, and 100% is actually about 80%. Your phone lives its whole life in that 40% of usable capacity. Maintaining a state of charge higher than 80%, or discharging below 40%, shortens battery life.
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Click to collapse
I am not sure the software on our phones does anything quite as aggressive as you are suggesting, i.e. charge only till 80% and let you use it only till 40% of the physical capacity. Given the rated capacity of the internal batteries in phones, which can be easily identified via a teardown and how much charge is actually done based on measurements, unless the phone has a setting (some phones nowadays allow you to set an upper limit to the amount of charging to 80% or 90%) most phones including the Pixel 2 do NOT do any such kind of battery management. The Pixel 2 does let you charge till 100% of the battery's actual capacity and let's you drain it pretty much completely as well. So I am not sure what info made you believe that it does such battery management.
Tesla's etc. I can believe do such battery management as it is crucial for the longevity of a very expensive car.

New battery health

I’m curious about battery health as reported by Accubattery (I can’t find the battery health stat in the phone itself). I’ve had the 4a 5-6 days and the health is at 97% (3048/3140). Is that normal?
I had some issues with battery drain at first, getting around 4.5 hours (a few people here pointed out it’s likely due to it not being on wifi). But I did a factory reset and it seems to be doing better (now I’m on track for ~6).
I‘ve read battery health numbers aren’t super accurate so I imagine some fluctuation is normal. Just trying to verify whether I’ve lost 3% battery life in a week. Thanks!

I bought it a month ago. Holds at 104% for 3 weeks, and recently dropped sharply to 99%. I think you shouldn't believe the program

Li's like being use in their mid range; short midrange cycles/more frequent partial charges.
High cell voltage and high temperatures cause premature wear. Accubattery is encouraging this partial charge strategy although it's not necessary accurate.
Don't charge your battery to 100% very often.
80% is better, 64-70% is best.
Don't discharge past 20%, a low limit of 30-40% is best.
Never charge if battery is below 40F.
Avoid starting a charge if battery is below 72F whenever possible.
Low temp charging can cause Li plating which will permanently degrade the cell.
Avoid charging over 100F.
75-90F is best
Fast charging causes no harm.

cool thanks. accubattery went from 97% to 98% a few days later so I don't think it's super accurate. I've never had it say 100% on this new battery though so I'm worried it's a bit low but oh well. Thanks all.

suda space said:
cool thanks. accubattery went from 97% to 98% a few days later so I don't think it's super accurate. I've never had it say 100% on this new battery though so I'm worried it's a bit low but oh well. Thanks all.
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First you need to set whatever is the actual capacity of the battery. Accubattery will use the capacity that the Android is reporting, typically 4170 for a 4300 ma battery in the Note 10+ case.
It's wrong; but Android is the culprit in this case.
Accubattery is a very useful apk. It adjustable alert when charged to X% is great. It also logs net power charging/discharging. I use it for battery temp too.
People expect too much out of it.
I doubt it's low, in fact it may well have a slightly higher than rated capacity. Take care of it and you can milk years out of it. Frequent midrange charges, and watch the heat.
If the phone battery temp when using gets into the high 90's, cool it down. I use a damp microfiber cloth or rag.
At a battery temp of 102F I screen off the device.

blackhawk said:
Li's like being use in their mid range; short midrange cycles/more frequent partial charges.
High cell voltage and high temperatures cause premature wear. Accubattery is encouraging this partial charge strategy although it's not necessary accurate.
Don't charge your battery to 100% very often.
80% is better, 64-70% is best.
Don't discharge past 20%, a low limit of 30-40% is best.
Never charge if battery is below 40F.
Avoid starting a charge if battery is below 72F whenever possible.
Low temp charging can cause Li plating which will permanently degrade the cell.
Avoid charging over 100F.
75-90F is best
Fast charging causes no harm.
Click to expand...
Click to collapse
Info is misleading, outdated (overlooks recent battery refinements) and originally based on much larger packs used in laptops, etc. Mobile devices discharge frequently, rarely spending significant time at high charge levels. Laptops are often tethered to a desk and charger for extended periods.
While there's nothing amiss with avoiding extremes one should not feel compelled to carry around a damp microfiber cloth (lol) to cool the phone when it reaches body temp. Yep, battery capacity may drop 10% over the life of the device by not getting panties in a knot over thermals. It's just a phone ...

DB126 said:
Info is misleading, outdated (overlooks recent battery refinements) and originally based on much larger packs used in laptops, etc. Mobile devices discharge frequently, rarely spending significant time at high charge levels. Laptops are often tethered to a desk and charger for extended periods.
While there's nothing amiss with avoiding extremes one should not feel compelled to carry around a damp microfiber cloth (lol) to cool the phone when it reaches body temp. Yep, battery capacity may drop 10% over the life of the device by not getting panties in a knot over thermals. It's just a phone ...
Click to expand...
Click to collapse
This has nothing to do with laptops although on my e6400 you can software disable battery charging at will.
The Li battery weakness is it's user. Any time it's taken to a full charge you are doing substantially more damage than a 64% top off. One full charge cycle vs >1/20% a full charge cycle.
That's a lot of lost life.
You'll get about 2 years out of it or less with your plan if you're a heavy user.
Rather inept management when you could get years more...

blackhawk said:
This has nothing to do with laptops although on my e6400 you can software disable battery charging at will.
The Li battery weakness is it's user. Any time it's taken to a full charge you are doing substantially more damage than a 64% top off. One full charge cycle vs >1/20% a full charge cycle.
That's a lot of lost life.
You'll get about 2 years out of it or less with your plan if you're a heavy user.
Rather inept management when you could get years more...
Click to expand...
Click to collapse
We'll agree to disagree on the applicability and merits of aggressive battery management on modern mobile devices. I am quite familiar with the arguments but have no stomach to rehash the details (which matter). Best wishes, mate.

DB126 said:
We'll agree to disagree on the applicability and merits of aggressive battery management on modern mobile devices. I am quite familiar with the arguments but have no stomach to rehash the details (which matter). Best wishes, mate.
Click to expand...
Click to collapse
Fair enough... the devil is in the details.
I'll see how my 10+ does. Lol I may end up tearing it down to replace the bloody charging port before the battery needs replacement
A battery replacement isn't the end of the world.
Cheers, mate.

Hi
I bought my phone 4 weeks ago . I am currently using Realme 8 pro.
In accubattery it shows i have 89% battery health. Is accubattery accurate?
It makes me concern why my battery sustaining so fast .

blackhawk said:
Fair enough... the devil is in the details.
I'll see how my 10+ does. Lol I may end up tearing it down to replace the bloody charging port before the battery needs replacement
A battery replacement isn't the end of the world.
Cheers, mate.
Click to expand...
Click to collapse
Hi
I bought my phone 4 weeks ago . I am currently using Realme 8 pro.
In accubattery it shows i have 89% battery health. Is accubattery accurate?
It makes me concern why my battery sustaining so fast .

Mi Nabil said:
Hi
I bought my phone 4 weeks ago . I am currently using Realme 8 pro.
In accubattery it shows i have 89% battery health. Is accubattery accurate?
It makes me concern why my battery sustaining so fast .
Click to expand...
Click to collapse
Not really. The value it uses is from the Android OS its self which is inaccurate and constant.
In my case it is 4100 mAh.
On my original 4300 mAh battery it was off by 200 mAh, on the replacement 300. Assuming the battery was as speced. It could have even been over the speced value.
Depending on the battery temperature and the charge range Accubatter's estimate can vary by 200 even 300 mAh.
Set it so it will read 100% by entering the value Accubattery thinks it sees when the battery is fully charged. It makes it easier and less dissettling to track
In the course of the battery's life you'll probably end up reloading and losing the data but for short term monitoring it's very useful.
It's logging history is great for quickly spotting excessive battery usage or slow charging. With those considerations in mind it's a useful tool that doesn't consume very battery it's self.
After the Pro version is active I firewall* block it as it is constantly in internet contact otherwise... I don't need that. If you disable Playstore or Google play Services it will revert back to the free version unless firewall blocked I disable the former two most of the time so there's that.
That's my biggest complaint about it.
*Karma Firewall, a great freeware apk that uses almost no battery

Sir in my case it showed accurate capacity of my battery.
When charged my phone first my phone had 99% battery health.
But 4 weeks later it says something 89 percent.
I don't know about battery science. But can you tell me in short is it okay? . Or i should go to coutomer care?

Mi Nabil said:
Sir in my case it showed accurate capacity of my battery.
When charged my phone first my phone had 99% battery health.
But 4 weeks later it says something 89 percent.
I don't know about battery science. But can you tell me in short is it okay? . Or i should go to coutomer care?
Click to expand...
Click to collapse
Really I doubt they would accept Accubattery's data.
When your SOT drops significantly and it's not because of excessive battery usage by apk(s), then you know you have a problem.
Heavily used phones will get about 1-2 years of usable battery life. I'll probably replace mine again at the 1 year mark.
If you want it to last longer only charge to 80-90%
Don't discharge below 30%
Li's like frequently midrange charge/discharge cycles. Frequent midrange partial charges prolong their life a lot.
Never charge if below 40°F
Do not charge below 72°F, 85-95F is the optimum start charge temperature.
Do not allow battery temperature to exceed 100F when charging, cool as needed.

blackhawk said:
Really I doubt they would accept Accubattery's data.
When your SOT drops significantly and it's not because of excessive battery usage by apk(s), then you know you have a problem.
Heavily used phones will get about 1-2 years of usable battery life. I'll probably replace mine again at the 1 year mark.
If you want it to last longer only charge to 80-90%
Don't discharge below 30%
Li's like frequently midrange charge/discharge cycles. Frequent midrange partial charges prolong their life a lot.
Never charge if below 40°F
Do not charge below 72°F, 85-95F is the optimum start charge temperature.
Do not allow battery temperature to exceed 100F when charging, cool as needed.
Click to expand...
Click to collapse
One more question sir.
What is better for battery health charging 20 to 100% once or charging 20 to 80% twice in a day.

blackhawk said:
Really I doubt they would accept Accubattery's data.
When your SOT drops significantly and it's not because of excessive battery usage by apk(s), then you know you have a problem.
Heavily used phones will get about 1-2 years of usable battery life. I'll probably replace mine again at the 1 year mark.
If you want it to last longer only charge to 80-90%
Don't discharge below 30%
Li's like frequently midrange charge/discharge cycles. Frequent midrange partial charges prolong their life a lot.
Never charge if below 40°F
Do not charge below 72°F, 85-95F is the optimum start charge temperature.
Do not allow battery temperature to exceed 100F when charging, cool as needed.
Click to expand...
Click to collapse
Sir can you please answer my last question?
That i have qutioned you in previous reply

How to Check Battery Health

If you want to know the method about How to Check Battery Health? then you simple click given below link and see the complete method. In this way, you can also see the sumsang mobile battery health here.
Click here: How to Check Battery Health

If only it really did...
That doesn't really tell much about its health other than relative power level (of current "full" capacity rather than what its capacity was when new)*.
The only valuable information is the actual SOT and the screen off time power consumption.
The current ones vs what these values were when the battery was new, roughly.
The charging curve may also indicate erratic fast charging which can be a sign of a failed Li.
A swollen battery is a failure. A bulging rear cover or display is the only warning you'll get.
Even then the battery condition will still be reported as "Good"
To avoid a failure and possibly destroying the display, even the whole phone, replace Li's when they fall below 80% of their original capacity.
At 50% it's clearly noticable as run time is cut in half of what it was when new.
Don't wait for it to fail. A degraded Li is much more likely to fail than one in good condition.
*% is based on cell voltage not current capacity.
As a cell degrades it still charges to near the same voltage as new but its current capacity slowly declines. So the battery % indicator provides only one of two needed parameters to gauge battery health. VxA=Watts
The phone's wattage use is constant as is the required voltage for V+. The phone's power controller uses more amps as the battery voltage falls to maintain a constant V+ and mAh.
Accubattery gives useful power usage logs to help gauge excessive power usage and monitor battery decline.
This is what a healthy battery's usage pattern looks like. This battery is 4 months old.

How hot is to hot? (phone cpu+battery)

I just got a warning from my relatively new (10 day old phone) that it was closing down applications due to a battery temperature of 62.4C and a CPU tempereature of 59C is this normal?
I am not 100% sure which one it was complaining about, I believe the battery temp

What phone?!!

blackhawk said:
What phone?!!
Click to expand...
Click to collapse
Oppo x3 find pro

PaulGWebster said:
Oppo x3 find pro
Click to expand...
Click to collapse
It was not quite it's fault though ... I was doing some cooking and shoved it out of the way on a pyrex shelf that was well ... warmer than I expected
Just hope I have not caused it any serious
harm ... it all appears fine, though it had been sat on the shelf 6 hours while stew was being made >.>

144°F is hot for a cell phone battery, although technically it's close to some Li's max operating temperature range.
Shutdown temperature on Samsung phones for the battery is around 108F. I don't go over 103F battery temp and typically go screen off at a battery temperature 101F.
The cpu can run hotter.
Is the processor running a high load?
If so the big question is what's ramping up the cpu cycle usage? Find the problem app(s) and sort out the problem.
It sucking up internet bandwidth? Bloatware?
What's using the most battery?
Try in safe mode.
You're burning up the battery longevity. Limit the top charge to 80% for now until you resolve this issue. Keep screen brightness at 50% or lower.
Running at or near shutdown temperatures can cause permanent damage. It's especially hard on a fully charged Li battery.
Edit, you posted while I was replying. You may have knock some life out of the battery. I had one over temperature event on a fully charged Note 10+ battery that caused it to lose about 5% of its capacity. It failed a little more then a year latter.
3 things Li's don't like; full charges, high temperatures and charging below 72F.
Never attempt to charge if below 40F.

I agree. The only damage will be to the battery. The phone itself can withstand well over 100c without problems. The internals can take soldering which is 300c ish. The battery however, not too fond of anything above room temp.

at least a one off, won't sit it up there again!
Also seems to have been lucky it does not seem to have had aany affect

blackhawk said:
144°F is hot for a cell phone battery, although technically it's close to some Li's max operating temperature range.
Shutdown temperature on Samsung phones for the battery is around 108F. I don't go over 103F battery temp and typically go screen off at a battery temperature 101F.
The cpu can run hotter.
Is the processor running a high load?
If so the big question is what's ramping up the cpu cycle usage? Find the problem app(s) and sort out the problem.
It sucking up internet bandwidth? Bloatware?
What's using the most battery?
Try in safe mode.
You're burning up the battery longevity. Limit the top charge to 80% for now until you resolve this issue. Keep screen brightness at 50% or lower.
Running at or near shutdown temperatures can cause permanent damage. It's especially hard on a fully charged Li battery.
Edit, you posted while I was replying. You may have knock some life out of the battery. I had one over temperature event on a fully charged Note 10+ battery that caused it to lose about 5% of its capacity. It failed a little more then a year latter.
3 things Li's don't like; full charges, high temperatures and charging below 72F.
Never attempt to charge if below 40F.
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Ah that is fien I only use C

I wonder if the phone will even tell me if it has lost capacity .... it seemed to charge to 100% this morning, but im not sure if that is 100% of what remains or 100% of its undamanged sate

PaulGWebster said:
Ah that is fien I only use C
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The Fahrenheit system is better suited for everyday life. It uses whole numbers in the temperature ranges most used real life.
Lol, walking a klick is easier than a mile, mph is faster, and a °C is a lot hotter than a degree in F.
Consider your cpu heatsink broke in and well seated
You will see lost capacity as a decrease of SOT.
The % indicator doesn't see capacity per se but voltage level only.
Keep an eye open for cover bulging; any battery swelling is a failure.
Watch for shifts in charging time and erratic fast charging. As a battery degrades or fails these change, it can be slow or overnight.
After seeing one failure on my heavily used device I decided to just change out the battery every year or so. It's not worth destroying the display over or deal with the loss in capacity. Most batteries aren't that hard to replace once you know how. In a few phones though it's not pretty. The Note 10+ is rated as hard but in reality it's not if done correctly... so actually watch one being replaced in person if possible.

blackhawk said:
The Fahrenheit system is better suited for everyday life. It uses whole numbers in the temperature ranges most used real life.
Lol, walking a klick is easier than a mile, mph is faster, and a °C is a lot hotter than a degree in F.
Consider your cpu heatsink broke in and well seated
You will see lost capacity as a decrease of SOT.
The % indicator doesn't see capacity per se but voltage level only.
Keep an eye open for cover bulging; any battery swelling is a failure.
Watch for shifts in charging time and erratic fast charging. As a battery degrades or fails these change, it can be slow or overnight.
After seeing one failure on my heavily used device I decided to just change out the battery every year or so. It's not worth destroying the display over or deal with the loss in capacity. Most batteries aren't that hard to replace once you know how. In a few phones though it's not pretty. The Note 10+ is rated as hard but in reality it's not if done correctly... so actually watch one being replaced in person if possible.
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Click to collapse
*mumbles kelvin*
I am not sure I will be able to actually see battery swell ... the front of the case is glass, the back is metal and its IP 68 ...
I bet there is an app for actual battery condition out there though!
There certainly is for laptops etc, SOT? something of time .... my guess is surcharge over time?

PaulGWebster said:
*mumbles kelvin*
I am not sure I will be able to actually see battery swell ... the front of the case is glass, the back is metal and its IP 68 ...
I bet there is an app for actual battery condition out there though!
There certainly is for laptops etc, SOT? something of time .... my guess is surcharge over time?
Click to expand...
Click to collapse
It will either push up the display or rear cover. I missed that early warning on my Note 10+ because of the case, oops. I was very lucky it didn't damage the display.
When the battery reaches 80% of what its new capacity was, it's reached the end of its useful service life and is considered degraded. Degraded Li's are much more likely to fail. If it shorts internally it can make a hot mess of the phone. Degraded cells are more likely to form dendrites that puncture the anode/cathode insulation and cause a short. Cold charging can cause Li plating which permanently damages the cell capacity... avoid charging under 72F, although a minimum of 82F is a preferable start charge temperature
Accubattery's charge/discharge logging feature is very useful as is the handy battery temp reading. I firewall block it though.
Screen On Time, I use to find misbehaving apps and gauge the battery over time. My typical usage is 7-13%@hr. 7-8% browser, 10-12% watching vids.

hmmm a 15 minute charge put it at 87% charged

PaulGWebster said:
hmmm a 15 minute charge put it at 87% charged
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I go by % per minute. On the N10+ when fast charging between 30-70% it runs at 2%@min.
On a bad battery it increases to 3%@min, or fast charging will fail to engage in spite of meeting % and temperature range requirements.
A failing battery will charge too quickly and/or erratically.
Accubattery makes it easy to overview the behavior.
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blackhawk said:
I go by % per minute. On the N10+ when fast charging between 30-70% it runs at 2%@min.
On a bad battery it increases to 3%@min, or fast charging will fail to engage in spite of meeting % and temperature range requirements.
A failing battery will charge too quickly and/or erratically.
Accubattery makes it easy to overview the behavior.
View attachment 5531093
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Well ... appanrelt my oppo is now reporting 30% is the new 100%

PaulGWebster said:
Well ... appanrelt my oppo is now reporting 30% is the new 100%
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What do you mean? It lost calibration or capacity?

blackhawk said:
What do you mean? It lost calibration or capacity?
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Click to collapse
It is meant to carry a Li-Po 4500 mAh, non-removable battery, the current rated charge at 100% is 1017mAh

PaulGWebster said:
It is meant to carry a Li-Po 4500 mAh, non-removable battery, the current rated charge at 100% is 1017mAh
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Where is that coming from?
What's your typical SOT?

Every battery is losing capacity over the time, nobody can hinder this. But this can get slowed down if discharging / charging the battery is correctly done.