I spend a lot of the day with my phone tethered acting as a hotspot with unmetered data for my laptop, so the battery would drain very quickly if the phone was not plugged in. But at the same time, this means that I'm constantly plugged in and maintaining my battery at 100%, or if I return after a meeting or lunch, I'd be constantly charging from 80% back to 100%. I understand that both practices (keeping the battery at 100% and charging the last 20%) are not good for the battery. Since I usually have access to a charger, I don't really need to be charged to maximum battery capacity most of the time.
Is there any way to get the Pixel 2 XL to stop charging beyond 80% ?
Searches led me to https://android.gadgethacks.com/how...oid-device-avoid-excess-battery-wear-0176280/ That tells me to set /sys/class/power_supply/battery/charging_enabled to 0 to see if it charging stops.
But my Pixel 2 doesn't have /sys/class/power_supply/battery/charging_enabled. It has /sys/class/power_supply/battery/charge_disable instead, but setting this to 1 does not seem to stop charging. So it seems unlikely that Battery Charge Limit.apk would work. Does it work for anyone else?
This is wrong lithium-ion batteries are designed to be topped off, they last the longest staying above 30%.
My understanding is that these are not good for battery lifespan:
- charging the top 20%. I.e. charging from 80-100% uses up more charge cycles than 40-60%
- keeping the battery constantly at 100%. I.e. storing at 50% is better than storing at 100%
Are these inaccurate?
And, is there a way to limit charging to xx %?
Battery Charge Limit is closest to what what you're looking for - here's the main post.
https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002
When should you charge your phone?
"Leaving your phone on the charger all night (or all day) is far better for your*battery*than running it down and charging it up. 2.*Charge*a little bit whenever you can. Lithium-ion*batteries*don't respond well to being*charged*all the way up and then run all the way down."
May 26, 2015
http://www.popularmechanics.com/technology/gadgets/a15731/best-way-to-keep-li-ion-batteries-charged/
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I have battery charge problem.
I charge (on USB) my NS about 7 hours (during I sleep), after wakeup I check charge status it was "Charged", after that I unlock and goto home screen to check battery again.It was 100% so after that I unplug charger.
The battery level was drop to 97% immediately.
Is my NS got hardware problem?
Thank you and sorry for my English.
Normal problem out it will be fixed soon
Sent From Your Mom's Nexus S.
i think ive read that it helps the battery last longer.
Also, ive been experiencing some other problems with charging my phone.
When its plugged into my wall and charging, instead of increasing battery percentage as it should, it will decrease in battery percentage, really strange. I'm not sure if its the battery or my charger? Anyone else experiencing this issue?
Did XDA NS have list of problem on 2.3.2 and 2.3.3
Sorry I found that forum
That 97% is a common problem? Man... I've been trying to recalibrate my battery the whole week...
They don't need to limit the charge to 97% to make the battery last longer. They can just lower the Full Charge limit without doing this awkward 3% drop after unplugging the charger.
thank you for all answer
Kel Ghu said:
That 97% is a common problem? Man... I've been trying to recalibrate my battery the whole week...
They don't need to limit the charge to 97% to make the battery last longer. They can just lower the Full Charge limit without doing this awkward 3% drop after unplugging the charger.
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My understanding is that this isn't a result of a lowered full charge limit but rather the way that LiOn batteries charge: once they reach full capacity they stop charging until they reach a bottom limit (Not sure what it is on the NS but on the Evo it was 90%) at which point they begin charging again. They do this because LiOn batteries do not absorb charge past 100% but they do absorb the heat from the charge. Over time this over heating can cause issues. There is another method of charging wherein the battery charges to full and then the amount of voltage is slowed but is continued. This method is called trickle charging and awhile back on the Evo it was all the rage until reports started to trickle in of batteries smoking or even catching fire due to overheating. Hence the reason why trickle charging is not standard.
I have noticed that when i plug my Z5 in to charge overnight, it will charge to full in just a few hours and then remain plugged in for the next ~6 hours until i unplug the phone 'fully charged" in the morning.
My theory is that the phone loses charge (maybe to protect the battery?) when left plugged in at full charge.
I will only get 3 hours SOT max if i leave my phone charging overnight. But if i unplug my Z5 as soon as it is fully charged i get 5 + hours SOT.
Also, often when i plug my phone into charge at 1 or 2 %, it sometimes actually causes my battery to die, before the phone boots again and starts to charge. Does anyone else notice this?
I am using the stock sony UCH 20 charger with came with my Z5.
What do you guys think?
That does sound peculiar. It should be noted that while it is normal for the phone to protect the battery by cycling between 90% and 100% when plugged in (battery gauge doesn't account for this, that's why it appears full all the time), it definitely shouldn't cause a 40% difference in SOT even if you happened to unplug when the battery is at 90 percent.
Yes, you're right. Once the battery is charged to 100%, the phone stops charging and will let the battery drop to around 92% and once it hits 92% it will start charging again to 100%. Even if you unplug the phone when it's showing 100% after charging at night, it might actually be charged to 93% for example. That's why very often people complain that the first 10% of the battery drops very quickly, while in fact it's just the battery meter catching up with the battery charge. This is done to protect the battery and ensure it retains charge after many cycles.
Regardless of that, the difference should not be that huge. For me it's usually extra 30 minutes SOT.
It seems the stock firmware has a load of random wakelocks but I have hope that a soon to come update will fix most of the issues, if you are rooted I suggest that you use greenify or amplify (reqires xposed)
One thing i've always wanted to know is if we plug our phones at 100% battery it still uses power from the battery and keep charging it over and over. Or if it uses power directly of the wall without consuming battery.
I want to use my phone for longer periods but im worried about battery health in the long run
fabricio7p said:
One thing i've always wanted to know is if we plug our phones at 100% battery it still uses power from the battery and keep charging it over and over. Or if it uses power directly of the wall without consuming battery.
I want to use my phone for longer periods but im worried about battery health in the long run
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The common recommendation for battery health on most smartphones with Li ion battery, is to charge often (avoid deep discharge/charge cycles), and not leave it on the charger for long periods of time when it is fully charged.
When connected to the charger and fully charged, it will let the battery drop slightly, then recharge, over and over again. I've seen the battery meter on this phone drop down from 100% to 99% when connected to the charger. Although I have a feeling it is doing this a lot more than you would be able to detect from the % meter.
redpoint73 said:
The common recommendation for battery health on most smartphones with Li ion battery, is to charge often (avoid deep discharge/charge cycles), and not leave it on the charger for long periods of time when it is fully charged.
When connected to the charger and fully charged, it will let the battery drop slightly, then recharge, over and over again. I've seen the battery meter on this phone drop down from 100% to 99% when connected to the charger. Although I have a feeling it is doing this a lot more than you would be able to detect from the % meter.
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I see, so no aparent benefit in using it with power cable conected.
thank you
fabricio7p said:
I see, so no aparent benefit in using it with power cable conected.
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In fact, more likely to be harmful than beneficial. I'd say it is better to use it for a while, let the charge drop (say down to 60-80%) than recharge to full, and disconnect the charger (don't leave it charging after it is full).
I should add that this is somewhat debatable. I don't follow all these rules myself. I'm pretty sloppy about putting the phone on the charger when I go to bed, and not unplugging it until I wake up. So plugged in for 8 hours or so, when it only takes 1-2 hours to charge to full. And we all drain the battery pretty low from time to time. So again, the is the deep discharging that should generally be avoided.
But if you want general guidelines or "best practice" than there it is.
I think its good idea to leave phone charging
If you want to charge the battery to the top end, you can charge it to 100%, let half a hour for the battery to cool and for the ions to set into some equilibrium state, and then you can charge it for a little bit more. (The battery percentage will not necessarily show it. The battery voltage is not all the time 100% correlated with its electric charge).
But as redpoint73 said, the common recommendation for Li ion battery is to disconnect it from charger while full.
Do you use the 85% charge limit?
i personally think that 85% is BS i have had god knows how many phone all charged to 100% every single night and ZERO! issue. and limiting this phone specially to 85 is a big cut in the hours you will get.
Not a chance. I'd hate this phone if it only charged to 85%.
I Use it all the time. 85% is enough Juice for one workday and i simple want the battery to last as long as possible. I have had bad experience with batteries dying after ~3 years.
The 85% Rule is no BS. You also have to keep an eye on minimal SOC and never go under 10% to avoid unnecessary battery degradation. With that your battery will perform according to the specs (~700 cycles until 80% SOH, modern smartphone batteries). Otherwise it will suffer and that reduces cycle life. This is simply the state of current lithium battery tech.
From my pov, a full day usage requires 100% of charge because some of them cannot charge the phone while they are outside the whole day.
I have wireless chargers almost everywhere, so when my phone is not being used it's normally sitting on a charger. That means that it very rarely uses much charge, so charging to 85% is fine by me. If I knew that I was going to be away from a charger for a protracted period, then I'd probably charge to 100% beforehand.
I can't get too excited about battery management. If I need to buy a new battery for my phone at some point in the future (it has never happened yet...) then that's what I'll do.
i use 85% because i have quick carger in my car and it charge all the time.
at home I have wireless charger and when i need i put it.
I tried it for a few weeks and instead of having 80% leaving work I was at 50%, not really worth it since I'll probably have a new phone in six months. It was too much of a headache stressing about battery life without the phone fully charging.
No, I charged to 100%.
Curious about whether many set charge to only 85%.
I am not a heavy user so not charging fully is not a problem.
Is there any evidence that doing incomplete charge extends battery life?
My previous phone Huawei Mate 20 pro was overnight charged to 100% for over 2 years and battery was as good as original in my experience.
I've set to 85% every since it was introduced. Find it more convenient, as seemingly, it gets charged faster to set level. It probably does prolong battery life to certain extent but to me that's not overwhelmingly important
Not super important to me either (I usually upgrade devices every year or so), but since a similar feature was introduced in OnePlus phones (limit charge to roughly 80-85-ish then finish to 100 before alarm or normal wake up time), I've been using Tasker to do the same thing. Limit charge to 85 and turn off fast charging, then an hour before alarm sounds, turn on fast charging and turn off the 85% limit. When I get up in the morning phone is at 100% and has only been there for about 15 minutes before removing it from charger. Seems to work pretty well.
GTT1 said:
Curious about whether many set charge to only 85%.
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I only charged my phone to 100% once, the first time I pulled it out of the box. After that, I have been using the 85% limit for months.
zoman7663 said:
Not super important to me either (I usually upgrade devices every year or so), but since a similar feature was introduced in OnePlus phones (limit charge to roughly 80-85-ish then finish to 100 before alarm or normal wake up time), I've been using Tasker to do the same thing. Limit charge to 85 and turn off fast charging, then an hour before alarm sounds, turn on fast charging and turn off the 85% limit. When I get up in the morning phone is at 100% and has only been there for about 15 minutes before removing it from charger. Seems to work pretty well.
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I'm doing same thing with Bixby!
GTT1 said:
Curious about whether many set charge to only 85%.
I am not a heavy user so not charging fully is not a problem.
Is there any evidence that doing incomplete charge extends battery life?
My previous phone Huawei Mate 20 pro was overnight charged to 100% for over 2 years and battery was as good as original in my experience.
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Click to collapse
I only charge to 85% as it will extend battery life. You can see in the chart I charged the phone initially to 100% (tall bars) then I charged to 85% (small bars). You'll essentially get 3 charges to 85% for 1 charge to 100% battery wear wise.
i dont cares, as i will buy S23 Ultra Pro Max soon
zoman7663 said:
Not super important to me either (I usually upgrade devices every year or so), but since a similar feature was introduced in OnePlus phones (limit charge to roughly 80-85-ish then finish to 100 before alarm or normal wake up time), I've been using Tasker to do the same thing. Limit charge to 85 and turn off fast charging, then an hour before alarm sounds, turn on fast charging and turn off the 85% limit. When I get up in the morning phone is at 100% and has only been there for about 15 minutes before removing it from charger. Seems to work pretty well.
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So the problem is not charging it up to 100% but being charged to 100% for a long time?
bat0nas said:
So the problem is not charging it up to 100% but being charged to 100% for a long time?
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From what I understand, it's the lesser of the evils. Charging to 100% is still not great over a long period of time (years I'm guessing) but leaving it on charger after reaching 100% is worse.
bat0nas said:
So the problem is not charging it up to 100% but being charged to 100% for a long time?
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Here is a good article which explains charging best practices with your phone.
How to maximize battery life: Charging habits and other tips
If you've ever wondered what the best way to charge your battery is, here are some scientifically proven tips for maximizing battery life.
www.androidauthority.com