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[Q] How Many Times Did You Calibrate Your Battery Before You Gained Full Potential

I am now on my 2nd full charge. Drained completely and full charge while off. I have the battery calibration app and i use it. Im about to take my phone off the charger and put it to work.
How many times did you calibrate your battery before you got the full potential of it. I see some people are getting as much as 30+ hrs on their device while im getting 7-9 on moderate use.

I've never done that. Always read that draining lithium-ion batteries hurts the battery if done repeatedly. Instead I just charge to full then delete battery stats in clockworkrecovery. Battery has been great ever since that and a factory reset.

regP said:
I've never done that. Always read that draining lithium-ion batteries hurts the battery if done repeatedly. Instead I just charge to full then delete battery stats in clockworkrecovery. Battery has been great ever since that and a factory reset.
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Ill keep it till tues/wed and see what happens. If I don't see improvement ill exchange once again
Sent from my LG-P999 using XDA Premium App

regP said:
I've never done that. Always read that draining lithium-ion batteries hurts the battery if done repeatedly. Instead I just charge to full then delete battery stats in clockworkrecovery. Battery has been great ever since that and a factory reset.
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What does deleting the battery stats via ClockWork do? Do you delete them on each charge?
I was getting great battery life and then I used the calibration software and I'm getting good, but slightly less great battery life. Does uninstalling/freezing that app do anything or once it's calibrated, it's done?

The phone has a dual-core processor, and the best GPU you can get in a phone these days, so you can't expect it to get super battery life unless you never use the phone much. I did the calibration once, and have been able to go all day under moderate to heavy use. All day being 8am-7pm and still having ~20% charge.

Sadly my first g2x that I received wasn't able to go through more than 4 hours of standard use even after fully charged the 2nd time. I sent it in last Friday for exchange and now I'm waiting for the 2nd g2x to be send to me. Well see how it goes by then.

@himmelhauk - I noticed in your signature that you have the Paul O'Brien fix... I saw in that thread that that noticeably increased speed/smoothness, but I haven't heard anybody talk about its influence on their battery. Have you noticed a difference in your battery life after making that tweak?

Me
I only calibrated once, and that plus some other simple tweaks i saw great results. I usually get about 20+ hours of medium use(A few calls, non-stop texting, occasional game or youtube video, and checking email every couple of hours). If you want to see what I did you can click the link in my sig.

lobsterhead said:
What does deleting the battery stats via ClockWork do? Do you delete them on each charge?
I was getting great battery life and then I used the calibration software and I'm getting good, but slightly less great battery life. Does uninstalling/freezing that app do anything or once it's calibrated, it's done?
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it gets rid of the battery information stored within the os so that the phone reads the battery charge correctly. this was common practice for vibrant owners after flashing a new ROM. I've seen people saying that this phone has horrid battery drivers so I dunno how that will effect the battery stats but after a factory reset and deleting the stats my battery is double what I was getting on my vibrant.
I only do this after flashing a new ROM or in this case upon getting and setting the phone up. I would do it again if I swapped the battery for a different one also. just charge to 100%, reboot into clockwork, advanced menu, wipe battery stats, done. it DOES NOT increase battery life. it only allows the phone to read the battery more accurately which would keep the phone from thinking its dying when it still has considerable charge left. that's why you hear about people seeing their battery life read 1% yet the phone last for hours.

I only calibrated once because I realized the values were off a bit.

Tried every battery trick in the book. If you actually want to use the phone, nothing will help. Android is a battery eating nightmare. Hopefully one day the platform will mature so adults can use it as a business phone. I think I am returning mine or giving it to my kid.

I did a single calibration and am now seeing 20+ hours with decent usage. Fully charge the battery, use battery calibration app to erase settings, let it drain till it shuts itself off, try pressing the power button to make sure there's no remaining charge, then fully charge to 100% with the phone still off (you can tap the power button while its plugged in and off to briefly bring up a battery indicator on the screen with out actually powering up). Its true that lithium ion batteries last longer if they don't go through fully discharge cycles, but thats referring to repeated occurances, not a rare or occasional situation. And when calibrating, draining from 100 to 0 is the best method of getting a good calibration. Additionally, while its healthy to do the mid charges most of the time, about once a month or so you should do a full drain. This helps keep the calibration accurate (remember that android will continue to modify the file, albeit at a greatly reduced level after the initial discharge of a new calibration, hence why that occasional full discharge is valuable). A full discharge once a month won't significantly reduce your battery's life expectancy.

cbowens said:
let it drain till it shuts itself off, try pressing the power button to make sure there's no remaining charge
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Draining a li-ion battery past the safe shut off is an easy way to damage or completely kill the battery. Your phone is set to shutdown before complete discharge for this reason. The full discharge then charge method was for NiCd batteries. This has no use for lithium-ion batteries.

regP said:
Draining a li-ion battery past the safe shut off is an easy way to damage or completely kill the battery. Your phone is set to shutdown before complete discharge for this reason. The full discharge then charge method was for NiCd batteries. This has no use for lithium-ion batteries.
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True, but the method of attempting to power back up won't actually drain it past the safe point. The point is bad calibrations (either from the factory or by an incomplete calibration) can cause the OS to shut the phone down prematurely during your new calibration run (before the actual safe cut off), resulting in the calibration being off scale. When you attempt to power the phone back on, if it is at the true safety cut off, it won't reactivate, where as if the calibration from before was skewed, it will allow it to boot back up and finish draining down to the safety cut off. This is in line with the reports of people having incorrect readings on battery %, where they have a low number, reset the phone, and suddenly seem to jump up 10 or 20%.

lobsterhead said:
@himmelhauk - I noticed in your signature that you have the Paul O'Brien fix... I saw in that thread that that noticeably increased speed/smoothness, but I haven't heard anybody talk about its influence on their battery. Have you noticed a difference in your battery life after making that tweak?
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I honestly don't know if it made any difference on battery life, as I did the battery calibration before I installed the fix. At any rate, I get much better battery life after the calibration for certain.
Sent from my LG-P999 using XDA Premium App

cbowens said:
True, but the method of attempting to power back up won't actually drain it past the safe point. The point is bad calibrations (either from the factory or by an incomplete calibration) can cause the OS to shut the phone down prematurely during your new calibration run (before the actual safe cut off), resulting in the calibration being off scale. When you attempt to power the phone back on, if it is at the true safety cut off, it won't reactivate, where as if the calibration from before was skewed, it will allow it to boot back up and finish draining down to the safety cut off. This is in line with the reports of people having incorrect readings on battery %, where they have a low number, reset the phone, and suddenly seem to jump up 10 or 20%.
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I dunno about this phone but I know the galaxy s can still be powered on after the safe shut off and drained completely. People were doing exactly that and messing their batteries up. I would hate for people to misunderstand your post and end up making the same mistake. So the LG doesnt let you power on after the safe shutdown unless its connected to a charger? If so thats pretty good. In any case its a lot easy to just use clockwork, terminal emulator, or any other app to delete battery stats once your charged to 100%. No need to drain first

regP said:
I dunno about this phone but I know the galaxy s can still be powered on after the safe shut off and drained completely. People were doing exactly that and messing their batteries up. I would hate for people to misunderstand your post and end up making the same mistake. So the LG doesnt let you power on after the safe shutdown unless its connected to a charger? If so thats pretty good. In any case its a lot easy to just use clockwork, terminal emulator, or any other app to delete battery stats once your charged to 100%. No need to drain first
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I hadn't heard about the Galaxy S phones having that issue. Like I said, I came from the Eris and this method was the way to go with that phone, so perhaps its a manufacturer dependent function. In any case, I agree that the cwm method is better, but I meant my post to be accessable by those who may not have taken that particular plunge yet, since it only requires root. Thanks for the info though; its good to know in advanced that the safety shut off being unavoidable isn't a guarentee on all phones (though frankly it should be).
EDIT: Not sure if I'm reading it wrong, but it sounds like you thought I meant to drain the battery before calibrating, which isn't true; all you need to do precalibration is have the charge at 100%. The only time I was suggesting to drain it is during the actual calibration run, so that Android has a full scale of your battery's range. If thats not what you meant, than ignore this edit. Just wanted to make sure I was explaining myself correctly.

Also, if you open your battery cover and look at the battery, it's not suppose to go above 40 degrees celsius, or 104 degrees fahrenheit. I found that the temperature often goes past this, especially when watching movies for extended periods of time, or playing games, which leads to a significant decrease in battery life because heat and li-ion batteries are not a good combination.

andonnguyen said:
Also, if you open your battery cover and look at the battery, it's not suppose to go above 40 degrees celsius, or 104 degrees fahrenheit. I found that the temperature often goes past this, especially when watching movies for extended periods of time, or playing games, which leads to a significant decrease in battery life because heat and li-ion batteries are not a good combination.
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You can use SetCPU to make a profile according to battery temperature and underclock it when it gets to 40 degrees or something. I have profiles for when the screen is off and for temperature.

lobsterhead said:
You can use SetCPU to make a profile according to battery temperature and underclock it when it gets to 40 degrees or something. I have profiles for when the screen is off and for temperature.
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What r ur temp profiles
Sent from my LG-P999 using XDA Premium App

Who started this Lithion Ion battery conditioning.

There is no “break-in” or “conditioning” required for the Li-ion batteries. They do not need the old “fully discharge – fully charge” routine for the initial three charges as was recommended on older battery technologies. For a number of years now, the advice has been to fully drain a new rechargeble battery at least three times in a row, then do so at least once a month from then on in order to ‘condition’ it. This is designed to prevent ‘memory’ effects and to prolong the life and capacity of the rechargeable battery.
Unfortunately, it appears that this advice is not only incorrect but could be causing battery damage in that it’s reducing the shelf-life of your equipment.
Modern Li-ion batteries apparently do not suffer from memory effects. All that matters is how many recharging cycles they support. The more cycles they are put through, the less effective they become at holding a charge down the line. The caveat, however, is that you can accelerate their decline by forcing them to drain deeper and deeper.
According to Battery University, the depth-of-discharge on a Li-ion device will determine its ultimate cycle count. What this means in practice is that you should recharge your battery frequently and let it drain as little as possible in between recharges. Partial discharges are better.
As expected, high temperatures are also disastrous to the lifespan of Li-ion batteries. Interestingly, high-voltage charging has a similar effect. Higher voltages will charge the battery faster but damage it. The article suggests that user-regulated voltages for laptop batteries might be a useful way to allow the consumer to decide which is more important to them in their daily useage – faster recharge or longer life.
Always store a Li-ion battery full charged. Not doing so will reduce its lifespan and capacity.
Similarly, it would seem that keeping it connected to a power supply when it is 100% charged is not very wise either.

Thanks for posting this! I was wondering something similar after I got my Sensation. I was looking to improve my battery life and was wondering if the fact that I've let my battery discharge irregularly only a handful of times along with hardly ever leaving it off the USB laptop cable at home had anything to do with it. I'll be sure not to discharge it unnecessarily from now on.

Tacjim said:
There is no “break-in” or “conditioning” required for the Li-ion batteries. They do not need the old “fully discharge – fully charge” routine for the initial three charges as was recommended on older battery technologies. For a number of years now, the advice has been to fully drain a new rechargeble battery at least three times in a row, then do so at least once a month from then on in order to ‘condition’ it. This is designed to prevent ‘memory’ effects and to prolong the life and capacity of the rechargeable battery.
Unfortunately, it appears that this advice is not only incorrect but could be causing battery damage in that it’s reducing the shelf-life of your equipment.
Modern Li-ion batteries apparently do not suffer from memory effects. All that matters is how many recharging cycles they support. The more cycles they are put through, the less effective they become at holding a charge down the line. The caveat, however, is that you can accelerate their decline by forcing them to drain deeper and deeper.
According to Battery University, the depth-of-discharge on a Li-ion device will determine its ultimate cycle count. What this means in practice is that you should recharge your battery frequently and let it drain as little as possible in between recharges. Partial discharges are better.
As expected, high temperatures are also disastrous to the lifespan of Li-ion batteries. Interestingly, high-voltage charging has a similar effect. Higher voltages will charge the battery faster but damage it. The article suggests that user-regulated voltages for laptop batteries might be a useful way to allow the consumer to decide which is more important to them in their daily useage – faster recharge or longer life.
Always store a Li-ion battery full charged. Not doing so will reduce its lifespan and capacity.
Similarly, it would seem that keeping it connected to a power supply when it is 100% charged is not very wise either.
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I have to disagree with this to an extent, as its preferred to discharge and recharge the first times, as it freshens the cells and calibrates the phone to the battery.
But after this you should recharge it when it's at 30-40%
Also you should not leave a lithium batter fully charged when storing it, but rather have it at 60% and throw it in the refrigerator. This is what i have been doing to all mine batteries, but don't let it freeze though, this will harm the battery!

There's nothing worse than a know-it-all Uni student! If there's a real technician or scientist on the matter I would like to hear their advice.
As I am a mechanical technician I use a variety of battery powered tools all of which are Li-ion, I like to condition all my batteries but for the few that cannot be conditioned due to lack of time those particular batteries are, weaker, last less time and overall die out faster.

Flashmore said:
There's nothing worse than a know-it-all Uni student! If there's a real technician or scientist on the matter I would like to hear their advice.
As I am a mechanical technician I use a variety of battery powered tools all of which are Li-ion, I like to condition all my batteries but for the few that cannot be conditioned due to lack of time those particular batteries are, weaker, last less time and overall die out faster.
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Haha, it's not a Uni student, its batter university, a well known webpage
http://batteryuniversity.com/

Utking said:
Haha, it's not a Uni student, its batter university, a well known webpage
http://batteryuniversity.com/
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I see, so I suppose it just posted this all on its own?

Flashmore said:
I see, so I suppose it just posted this all on its own?
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No this man did: Isidor Buchmann
http://www.cadex.com/about/people.asp
http://www.myistop.com/blogs/greenbatterys/isidor-buchmann-battery
http://nutsvolts.texterity.com/nutsvolts/200612/?folio=58#pg58
I believe i can say i trust him

Are you sure? sounds more like Dracula's side kick, haha

Utking said:
I have to disagree with this to an extent, as its preferred to discharge and recharge the first times, as it freshens the cells and calibrates the phone to the battery.
But after this you should recharge it when it's at 30-40%
Also you should not leave a lithium batter fully charged when storing it, but rather have it at 60% and throw it in the refrigerator. This is what i have been doing to all mine batteries, but don't let it freeze though, this will harm the battery!
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This is exactly what I do. Last time I drained a phone down to 0% it killed the battery and wouldn't hold charge like it used to (was fine before I did it). Was on an old LG. Same thing happened to a friends phone too. From then on I try and tell everyone to never do it as well.

While I'm sure you have your sources, I have to disagree. When I got my vibrant, I didn't condition it at all, battery life was horrible. I bought a new battery (the same one), conditioned it, and it was 10000x better.
But I do agree that batteries have become much greater than they used to be about this.
Batteries are always a fun topic

This comes from rooted phones and batterystats.bin
It's recommended when you flash your new ROM that you turn off the phone. Than fully charge it. And while still charging removing batterystats.bin so your android phone knows 100% and than let it die down so it knows 0%.
I think that is where this all came from.

Flashmore said:
There's nothing worse than a know-it-all Uni student! If there's a real technician or scientist on the matter I would like to hear their advice.
As I am a mechanical technician I use a variety of battery powered tools all of which are Li-ion, I like to condition all my batteries but for the few that cannot be conditioned due to lack of time those particular batteries are, weaker, last less time and overall die out faster.
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The only thing I'm trying to do is help people from shortening the life of their batteries by listening to people who don't have a clue what they're talking about. Since you seem to spout out that "unconditioned" lithium Ion batteries are weaker, last less time and die out faster...lets see some professional resources from your "know it all" conclusion?

By no means an expert, just putting in my 2cent, i think people seem to mix the ideas of battery conditioning and recalibration. I think it IS useful to recalibrate batteries by draining the battery to 0% so the phone can recognize the accurate battery levels. However in terms of the battery, its always the same and there is no "reconditioning". the drain/recharge cycle is only useful for the PHONE for accurate recognition of battery level.

personally, i havn't bought into the conditioning aspect.. i can afford the $10-$15 it takes to replace a battery when it dies out and i always charge before it is dead (min 30%); (on the sensation so i dont lose temp root) but also because usually it would take 10 minutes or so for it to get enough juice to turn back on (in the iphones/touch's case.. but in any case i had always learnt that NiMH batteries you could drain fully and make sure to fully charge before you use them again; whereas Li-ion you could charge at 30% keep your good life and use the device at the same time pretty simple really

c19932 said:
By no means an expert, just putting in my 2cent, i think people seem to mix the ideas of battery conditioning and recalibration. I think it IS useful to recalibrate batteries by draining the battery to 0% so the phone can recognize the accurate battery levels. However in terms of the battery, its always the same and there is no "reconditioning". the drain/recharge cycle is only useful for the PHONE for accurate recognition of battery level.
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Agreed. From what I've read this hasn't anything to do with battery capacity or memory effect, it's so the phone can calibrate itself correctly to the battery inserted using the batterystats file giving a better indication of peak to zero.

Tacjim said:
The only thing I'm trying to do is help people from shortening the life of their batteries by listening to people who don't have a clue what they're talking about. Since you seem to spout out that "unconditioned" lithium Ion batteries are weaker, last less time and die out faster...lets see some professional resources from your "know it all" conclusion?
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Well you know what they say it takes one to know one!
As well as that I havent "spouted" anything (well not here anyway hehe)
My conclusion is this, dont believe everything you read, what a cliché
Seriously though I already gave my "real" practical know-it-all conclusion so unless you have somethijng to disprove it go and you know what

will fast charging will damage battery.?
I want to use fast charger for Nexus 5. Original charger gives 5.6 volts and 1.2 Ampere output.
Some post I found on xda which shows that fast charging working perfect on nexus 5,
can OP tell me that fast charging will affect battery or not? If it affects then how can I find its getting affected?
Thread which shows nexus 5 fast charging works perfectly.
http://forum.xda-developers.com/goo.../hands-best-fastest-cheapest-nexus-5-t2729066

Battery Calibration

I have seen a few threads about calibrating the battery, and I downloaded an app on the market, but I don't want to run it yet until i get some questions answered.
Is there a way that is better than others? Does calibrating the battery help with battery life, or what is the purpose?

stevew84 said:
I have seen a few threads about calibrating the battery, and I downloaded an app on the market, but I don't want to run it yet until i get some questions answered.
Is there a way that is better than others? Does calibrating the battery help with battery life, or what is the purpose?
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Battery calibration does nothing. A google employee even confirmed that battery stats are only used for keeping track of what is using your battery (which it does not do very well IMO). So deleting them and discharging the battery then rebooting and all that other crap only wastes time.
As for fully draining and recharging the battery to calibrate it... in short it does much more harm than good. Older Ni-Cad batteries used to have a 'memory' of sorts. if you did not fully discharge them from time to time they would act dead when they wernt.
The batteries in our phones (and most newer electronics) are Lithium-Ion (and in some newer phones Lithium-Polymer). these batteries have no 'memory'. in fact discharging them all the way is very bad for them, and can actually cause the battery to rupture if its done too extreme (you would have to short the terminals for this to happen)
The reality of this is that the less you let your battery discharge, the longer it will last. Every time you let it drain all the way (or almost all the way) you are harming it and reducing its lifetime.
The best way to take care of your phone's battery is to try to keep it between 50% and 80% full. Even keeping the battery fully charged for very long periods of time can be just as bad as discharging it fully.
TL;DR: get rid of that app, and dont ever think about doing any battery calibration ever again.
Further Reading Here and Here

Klathmon said:
Battery calibration does nothing. A google employee even confirmed that battery stats are only used for keeping track of what is using your battery (which it does not do very well IMO). So deleting them and discharging the battery then rebooting and all that other crap only wastes time.
As for fully draining and recharging the battery to calibrate it... in short it does much more harm than good. Older Ni-Cad batteries used to have a 'memory' of sorts. if you did not fully discharge them from time to time they would act dead when they wernt.
The batteries in our phones (and most newer electronics) are Lithium-Ion (and in some newer phones Lithium-Polymer). these batteries have no 'memory'. in fact discharging them all the way is very bad for them, and can actually cause the battery to rupture if its done too extreme (you would have to short the terminals for this to happen)
The reality of this is that the less you let your battery discharge, the longer it will last. Every time you let it drain all the way (or almost all the way) you are harming it and reducing its lifetime.
The best way to take care of your phone's battery is to try to keep it between 50% and 80% full. Even keeping the battery fully charged for very long periods of time can be just as bad as discharging it fully.
TL;DR: get rid of that app, and dont ever think about doing any battery calibration ever again.
Further Reading Here and Here
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Cool man, thanks...I'll skip on the calibration.

[Q] Battery Charging & calibration query

For MB865 in perticular :
1)What difference does it make if you charge from empty to 100% in switched off stage and the same in on state? Which is better?
2)How should we calibrate the battery and how often using which app for unrooted MB865 Asia retail?
3)Also if phone dies (switches off) constantly due to insufficient charge does it harm the battery in terms of cells getting destroyed gradually? Mine dies many times mostly in night due to day usage before I charge in the morning again.
4) Does switching off or switching on the phone while charging have any effect issue on phone or the battery??
Thanks in advance for inputs for all queries.

Calibrating the battery doesn't do anything. I wouldn't even mess with it. Every once in a while, charge your battery to 100% and use it til it dies without charging. That's about it. There isn't a whole lot you can do with you battery to make it better.
Sent from my SAMSUNG-SGH-I997 using xda premium

tmease1 said:
Calibrating the battery doesn't do anything. I wouldn't even mess with it. Every once in a while, charge your battery to 100% and use it til it dies without charging. That's about it. There isn't a whole lot you can do with you battery to make it better.
Sent from my SAMSUNG-SGH-I997 using xda premium
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Thanks & I guess it covers #2 of my queries . Can't even begin to describe how much essential my Moto WPS-602-P893 external portable battery pack charger is. I have to add when I first unboxed my Atrix 2 last month (launched only recently in India) the first thing I did without switching it on, was put it on charge for straight 6-7 hours (as I remember having read somewhere that devices are charged 50% from the factory & the initial charge plays an important role in the future performance of the battery. 3G & GPS coupled with some gaming suck the battery dry pronto.

@tmease1 Are you sure? I have read and tested that resetting the battery calibrations in more accurate reporting of what apps are specifically draining your battery.
Charging when your phone is off just makes it charge faster, nothing else.
And from my knowledge of chemistry Lithium-ion batteries (the one in your phone) should not shouldn't be let reach a complete stage of discharge. (I can give you an explanation of you would like). Lithium-ion batteries are very flexible, they can be charged at any point in the cycle but again letting it completely discharge is to be avoided. It shortens the battery life by about half after a year.

farshad525hou said:
@tmease1 Are you sure? I have read and tested that resetting the battery calibrations in more accurate reporting of what apps are specifically draining your battery.
Charging when your phone is off just makes it charge faster, nothing else.
And from my knowledge of chemistry Lithium-ion batteries (the one in your phone) should not shouldn't be let reach a complete stage of discharge. (I can give you an explanation of you would like). Lithium-ion batteries are very flexible, they can be charged at any point in the cycle but again letting it completely discharge is to be avoided. It shortens the battery life by about half after a year.
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I might not be right. From my personal experience what i told him is how i run my phone. I use to be the king of trying out new things to improve battery life. I would try anything. I use to calibrate my battery after ever flash and honestly have not seen any difference since i stopped. You would think that calibrating it would do more harm than good after awhile. Google at one time said that it wasn't necessary. I don't really know for sure what to tell anyone to do. I gave up on battery up keep awhile ago. I got sick of messing with it and just carried an extra charger.
Sent from my SAMSUNG-SGH-I997 using xda premium

Whenever I flash a different ROM I reset battery in CWM. Other than that, I'll run the battery down all the way at least once a month then recharge to 100%.
Sent from my MB865 using Tapatalk 2

Thanks for all your thoughts and inputs guys.
@Farshad could u please share method for resetting the battery calibration. Just want to give it a whirl to see my experience. I am unrooted on MB865.

Not agreeing or disagreeing with either side. But here is what Battery University says.
How to Prolong Lithium-based Batteries - Battery University
Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The smaller the depth of discharge, the longer the battery will last. If at all possible, avoid frequent full discharges and charge more often between uses. If full discharges cannot be avoided, try utilizing a larger battery. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles other than to calibrate the fuel gauge on a smart battery.
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Also you actually cannot completely discharge li on batteries. Doing so royally screws them up. So devices now that use them have a circuit which kicks in when they reach a minimum level telling the device to shut off.
Sent from something off of star trek

RAD7 said:
Thanks for all your thoughts and inputs guys.
@Farshad could u please share method for resetting the battery calibration. Just want to give it a whirl to see my experience. I am unrooted on MB865.
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Yeah, all you have to do is boot into CWM. Go to advanced, and there should be an option to wipte battery stats. Alternatively you could download an app just search "battery stats wiper" or something of that sort in play store.

[GUIDE] How to prolong the life of your Li-Ion battery

First off this isn't a guide about how to make your battery last longer between charges, at least it isn't yet. If a demand arises I will happily facilitate. *EDIT* For simplicity's sake I am including a link to V7's battery guide which addresses increasing the time between charges. ✭[GUIDE][26-07-2016]Extreme Battery Life Thread(Greenify+Amplify+Power Nap)✭This guide is about reducing wear that happens from many thing we all either knowingly do; out of a possible misunderstanding, or ignorance. All of this information is available doing a simple Google search, I am posting it here though for those who otherwise would not think to Google it. Furthermore I claim credit for absolutely none of this, but I do hope you find it helpful.
HOW TO PROLONG YOUR Li-Ion BATTERY'S LIFE​
1) Keep your battery at room temperature: Heat is the worst enemy of your cell phones battery. So keeping your battery at room temperature (65-75*F) is the first step towards prolonging your battery's life. According to Battery University
each 8°C (15°F) rise in temperature cuts the life of a sealed lead acid battery in half.
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They also go on further adding
Once the battery is damaged by heat, the capacity cannot be restored.
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There are many things you can do to keep your battery cooler, such as taking it off the charger when the phone is done charging, and avoiding prolonged continuous usage. Also avoid leaving your phone in your car, it gets upwards of 140* in a car during the summer. The worst thing that can happen to a Li-Ion battery is a full charge and high heat, so avoid charging your phone until your car has cooled off if you are charging your battery in the car. Heat is by far the greatest factor when it comes to reducing the lifespan of a Li-Ion battery.
2) Use partial-discharge cycles: According to lancair.net
Using only 20% or 30% of the battery capacity before recharging will extend cycle life considerably
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Other sites I read while researching this stated that users should use up to 80% of their energy before recharging, they were all consistent with regards to a few things including: avoiding full discharges will prolong battery life, and it takes several partial charges to use one full charge cycle. Additionally Li-Ion batteries do not have "charge memory", but your digital device most likely does. Discharging the battery until cut off after every 30 charge cycles re calibrates the devices gauge.
3) Avoid keeping your battery at 100%: Every source I referenced for this guide said the same thing about keeping your battery at a full capacity, but oranageinks.com explains it most simply by stating
Permanent capacity loss is greatest at elevated temperatures with the battery voltage maintained at maximum (fully charged).
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4) If you are going to store your battery for an extended period store it at about 50% charged: This goes hand-in-hand with number 3. Also keeping the battery cool during extended storage will slow deterioration. Keeping the battery in a sealed bag or tupperware in your refrigerator is okay, but storing your battery in the freezer is not. When a battery is fully charged oxidation is occurring at its highest rate, and oxidation is essential corrosion. Oxidation occurs whether the battery is in use or not, for this reason it is better to get a high capacity battery rather than a spare. So with this said it almost should go without saying that if you can, buy batteries with a recent manufacture date.
5) Avoid completely discharging your battery: Lancair.com states:
Very deep discharges will quickly, permanently damage a Li-ion battery. Internal metal plating can occur causing a short circuit, making the battery unusable and unsafe. Most Li-ion batteries have protection circuitry within their battery packs that open the battery connection if the battery voltage is less than 2.5 V or exceeds 4.3 V, or if the battery current exceeds a predefined threshold level when charging or is charging
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If you found this helpful please don't forget to hit the "Thanks" button

now that explain why my battery drain so fast,my phone temperature is a bit high these days,thank you :good

I decrease my battry drain with installing som suitable kernal
this way realy effective in my device battry mangement

You're absolutely right, and you hit the nail on the head,
Saeedblack said:
realy[sic] effective in my device battry[sic] mangement
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But the physical battery itself needs care too. Device battery management is more related to how much power the CPU sees that the device has. Understanding how a Li-Ion battery works is kinda important at this point. So basically the positive electrode is made of Lithium cobalt oxide (cathode), or LiCoO2. The negative electrode is made of carbon (anode). When the battery is charging, ions of lithium move through the electrolyte from the positive electrode to the negative electrode and attach to the carbon. During discharge, the lithium ions move back to the LiCoO2 from the carbon. Over time the Lithium ions bond to the carbon thereby restricting the flow, creating resistance which decreases the battery's ability to deliver current. So properly caring for your battery is really the only thing that will slow the inevitable. Its kinda the same thing for a car...all cars eventually die, but if you take care of them they will last much longer than if you neglect them.

Thanks for this. It's not the usually same guide for battery improvementent.
My battery life got a little better.

Thanks mate, that's some good information.

Hi.
Just wondering:
in "5) Avoid completely discharging your battery"
Most battery calibration softwares say you SHOULD fully discharge your battery then fully charge it for a good calibration.
So, someone like me, who likes to try new roms, new nightlys all the time, are "slowly" burning the battery to ashes by calibrating it after every flash.

It looks like running the processor faster than specified (overclocking) can result in higher temperatures inside the device and faster battery wear as a result.

azraelus said:
Hi.
Just wondering:
in "5) Avoid completely discharging your battery"
Most battery calibration softwares say you SHOULD fully discharge your battery then fully charge it for a good calibration.
So, someone like me, who likes to try new roms, new nightlys all the time, are "slowly" burning the battery to ashes by calibrating it after every flash.
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YES you are slowly burning the battery out, by draining it after every flash. The battery is going to die inevitably anyways though, most of the sources I found suggest doing a "full drain" every 30 charge cycles. Perhaps this is when you should go ahead and do your battery calibration. Also a full drain is not exactly self-explanatory in this case. Your device may say that a battery has 1% of its energy left and to an extent it does, but the battery is designed to cut off before it gets too hot or too low. If you have a tendency to cut your phone back on after it dies then you will deplete the battery completely, possibly resulting in permanent damage.
adrian816 said:
It looks like running the processor faster than specified (overclocking) can result in higher temperatures inside the device and faster battery wear as a result.
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Yes O/C can raise temperatures of the device. Certain kernels run a little hotter than others. My device is currently O/C'd and isn't any hotter than normal when I am not using the device due to CPU governors and what not, and its only marginally hotter than it is when at the stock clock speed. Prolonged heavy use takes a toll on the battery, due to the heat its creating. Also don't let the little bit of heat increase stop you from O/C'ing your device. Many manufacturers use the same cpu with different clock speeds, EX Snapdragon S3 chip is used in the EVO 3D @ 1.2GHz, and the HTC Rezound @ 1.5GHZ from the factory. This is done to reduce power consumption on power hungry phones or to extend the life of a cpu that has proven itself reliable(such as in the example of the Snapdragon S3)...it also helps to market devices without spending more on development.

Good adwise! :good:

This is all very good advice. A lot of it I knew, but I learned a couple new things as well. Glad to see someone making it more easily available to our community!
Sent from my SGH-I777 using xda app-developers app

Found this same information when researching my netbook battery.Turns out there is a good reason it will sleep/hybernate/power off at 3 percent, can damage a cell. On the upside this one will charge faster.

Thanks for the information.
Sent from my GT-S5360 using Tapatalk 2

Oh god, by "avoiding keep it at 100%" you mean "don't use it constantly while charging", right?
I have a seriously problem.

Wish I could do something about #1. My phone can get pretty hot when I'm using it and I like to do a lot of things like playing games or dling torrents which gets it toasty.
Will definitely unplug before 100% from now on though. Thanks

Jane Shizuka said:
Oh god, by "avoiding keep it at 100%" you mean "don't use it constantly while charging", right?
I have a seriously problem.
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Yea that's pretty much the gist of it...heavy use while charging creates even more heat than just heavy use or just charging. Since doing the research for this thread I've been doing things a little differently myself. Instead of leaving it on the charger most of the day I charge it at night and use it til about 50% then charge it up to 80%...it may be in my head but I highly doubt it. Doing as I described I have had 1 full charge (from 40% to 100%) and a top off charge (50% to 80%) and my device has been on since yesterday morning (so 36 hours+ with only a 30% top off charge). This is with moderate use, and my phone is currently at 70%...MUCH better than before though.
This guide is still meant more for longer term physical battery care, but it appears to have helped extend time between charges.
zlc1 said:
Wish I could do something about #1. My phone can get pretty hot when I'm using it and I like to do a lot of things like playing games or dling torrents which gets it toasty.
Will definitely unplug before 100% from now on though. Thanks
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Try a different kernel, or underclocking your phone, that should help with the heat.

Thanks, I'll keep this in mind!

Thanks for the advice, but i thought discharge it completely wont do any harm to the battery since the protection circuit will stop at around 3..0-3.4 mV?

ryanshady said:
Thanks for the advice, but i thought discharge it completely wont do any harm to the battery since the protection circuit will stop at around 3..0-3.4 mV?
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That is about the point the device will cut off, but if you turn it back on like I used to until the device won't turn back on that's when the battery is completely discharged. Battery University goes on to say
Each cycle wears the battery down by a small amount. A partial discharge before charge is better than a full discharge. Apply a deliberate full discharge only to calibrate a smart battery and to prevent “memory” on a nickel-based pack.
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Link to article HERE
*EDIT*

i wish there's a way to stop charging once it reaches 85-95% like my laptop...