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I go out at night mostly so by the time i leave the house my phones battery is about 75% full. I have the LG G2x. My question is sometimes before i leave i'll see that it's 75% full so i'll charge it back to 100% before i leave. Does charging the phone without it being drained damage the battery? should i just leave it alone next time i go out? sorry if this is already a thread just point me in the right direction.
Thanks.
You're not damaging your battery But if you never drain the battery completely, i'm not sure how good the battery will be after 6 month, so i recommend you drain it completely every couple of weeks.
Sent from my HTC Desire HD using XDA Premium App
There are several opinions about keeping battery health for more time. Recharging at 75% is not one of them, but it's not the worth of it.
Here's what i know and what i've heard:
* some manufacturers (laptops) have software that don't allow the battery to charge when it's over 80 to 90% - they say it helps on battery life
* it's common sense that you should recharge when you have 20 - 40% and do a full cycle once in a while (this is what i do)
In my opinion, charging only 25% of the charge in a regular basis will not really help to keep battery life...
I've personally had the best performance from batteries when I let them discharge as much as possible and then charge them to full without interruption.
some have also said that draining the battery too often can also damage it, is this correct?
They like to be ran down then recharged but not all the way down to nothing unless you are having a problem with bat life on a rom
groe886 said:
some have also said that draining the battery too often can also damage it, is this correct?
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Yes. You should not drain your battery all the time. Use normally, charge it when below 40% and yes, charge it back to full - that's the ideal thing.
l4g4rt0 said:
Yes. You should not drain your battery all the time. Use normally, charge it when below 40% and yes, charge it back to full - that's the ideal thing.
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+1 that is the best way. Li-on batteries should'n be drained completly because it can shorten their life.
I read somewhere that it is not important when you start charging your battery (20%, 60%...) but it's important that it finishes to charge up to 100% every time
I heard/read that LI-ION batter is good to charge when cap goes bellow 30%.
I have read every possible thread you can imagine on battery calibration and can never seem to do this correctly, is it a myth? No matter what I do, if I restart my phone, I end up going from 100% down to 85-86% EVERY SINGLE time.
This is after "bumping it". (letting it drain all the way to 0% and then fully charging again).
This is after using BATTERY CALIBRATION in the market which was told works well. (again, advises you charge to 100% then "calibrate" it via the APP).
This is after charging it to 100% and restarting it, recharging up to 100%, restarting and recharging (repeat, repeat, repeat), and then going into bootloader and wiping battery stats.
None of these have worked, does someone have a sure fire EXACT way to do this properly or is at ALL just hype? Help.
Your battery will never say 100% after a reboot. It sucks up a lot of juice on a power up and the battery doesn't charge during powering on. I usually drop about 10% on a reboot using the rezound battery. That is normal behavior. If you can charge to 100% with the phone on then you're fine.
Sent from my ADR6400L using Tapatalk
Interesting because I've never lost 15-16% consistently although I guess it using some juice to cycle makes sense. Anyone else seen 10+ every restart? Thanks for the help man in either case.
Hmm, never seen this before. On my phone which is running skyraider uc to 768mhz and uv only loses 1percent on reboot or doesn't even lose charge at all. Not sure why your phone is doing that.
Sent from my ADR6400L using xda premium
I am running G3D uc to 768mhz and on restart I may lose 1 - 5% at most depending on if i made any changes that take a longer restart. I bet you are overclocked? no need, under clock to 768mhz and your phone will run as smooth as 1.2mhz..maybe smoother while using less battery
Running liquid 3.2.1 on my T-Bolt with the Rezound battery and I only lose 1% battery at boot up. Never lost more...oh and I have never calibrated my battery. Also I get about 8-10 hours of moderate to heavy use too. All stock clocks btw
Just to double check - or reword... do it this way - if you aren't already.
Charge to 100%.
Wipe Batt stats
Drain to zero without recharging in any way (AKA let it drain until it shuts off on you).
Recharge until 100% (till it says 100%, not just "green."). And unplug.
And you're good! Try that and check back in.
Battery Calibration doesn't work
Ignore the % number, it means nothing. Use the battery monitor widget or another program that will show you the actual battery voltage. A fully charged battery will be somewhere around 4200 mV and a discharged battery between 3600 and 3200 mV. I've also noticed that the rezound battery throws things off as the mAh rating doesn't match up to either of the thunderbolt batteries. This is why the battery monitor widget shows the rezound battery as 2750 mAh instead of 1620.
What I recommend to my Evo peeps [which I have] is this:
-Charge battery to 100%
-Wipe battery stats in recovery
-Let the battery drain, so it manually powers off
-Charge to 100% again, and good to go
Battery Calibration doesn't work
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By this I mean Google Developers have came out recently and said battery calibration does not increase or have any effect on the state of battery life. All wiping the battery stats does is wipe the stats as to what has been using the battery, etc.
still handy for when you flash a new rom to wipe the stats, but it doesn't improve battery life at all.
smoody said:
By this I mean Google Developers have came out recently and said battery calibration does not increase or have any effect on the state of battery life. All wiping the battery stats does is wipe the stats as to what has been using the battery, etc.
still handy for when you flash a new rom to wipe the stats, but it doesn't improve battery life at all.
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Actually, the post from Dianne @ Google said nothing about calibration. She only talked about wiping or deleting the battery stats file.
You are correct, however all the battery calibration apps available only delete the battery stats file. So like I said it doesn't affect battery life.
wherestheboost said:
Just to double check - or reword... do it this way - if you aren't already.
Charge to 100%.
Wipe Batt stats
Drain to zero without recharging in any way (AKA let it drain until it shuts off on you).
Recharge until 100% (till it says 100%, not just "green."). And unplug.
And you're good! Try that and check back in.
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Click to collapse
This is what I thought I had done but will do again. The problem is even after its 100% and in between your 1st and 2nd step when I reboot into recovery, it's no longer at 100% and sometimes down to 85%ish. I will try again tho, thanks!
http://rootzwiki.com/_/articles/wiping-battery-stats-is-pointless-says-google-r316
That pretty much says it. Wiping stats and calibrations are placebos.
l7777 said:
That pretty much says it. Wiping stats and calibrations are placebos.
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Yeah I read that too. But when I flashed my first rom on the tb I got abysmal battery life. 25% in like 20 min. I recalibrated and it got so much better. If its a placebo its a good one.
Sent from my HTC ThunderBolt using Tapatalk
all that says is the the deleting the batterybin file doesn't help. The battery is handled by each by software outside of android itself. So, following the battery calibration from the manufacturer of your phone still might help.
jefferyriess said:
Yeah I read that too. But when I flashed my first rom on the tb I got abysmal battery life. 25% in like 20 min. I recalibrated and it got so much better. If its a placebo its a good one.
Sent from my HTC ThunderBolt using Tapatalk
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25% in 20 minutes means nothing. The % is an estimated number. Find an app that reads the battery voltage if you want a true reading on the battery's charge. Full is 4.2 volts, dead is between 3.0 - 3.6 volts. Battery life should only be measured in hours from full to dead. I've seen my phone stick on 100% for several hours before as well as sticking at 20% for several hours. Ignore the %. Anyone spending all day looking at a % to judge their battery life should go back to a battery indicator that doesn't show %.
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.
I am using p500 from one and half years and i use it heavily so i have to charge it every day. Now i feel that the battery has done his job
And now i am getting a poor battery life
Sent from my LG-P500 using xda app-developers app
> how poor is it? about how many hours on normal usage? I use mine heavily on one day and it last 8-9hrs
I'm using my phone since 19 months and battery is fine heavy usage gets me 8-10 hrs battery while moderate gets about 24Hr and simple usage(just for call and msg) gets me more than 50hrs..
A Lithium-ion battery has normally 400-1200 charging cycles (Ref. Wiki).
Couple of things that shorten life span of a battery:
1) Complete discharging, it is recommended not to go below 20%
2) High temperature which implies that if you OC too much your device will heat up and battery life shortened
3) If you consume 50% of your device battery on day 1, recharge to 100% at night, and do the same thing on day 2, then you would have just finished up one charge cycle of its battery life. Constantly recharging a lithium ion battery does not shorten the battery life more than normal usage would. Hence constantly recharging a lithium ion battery does not shorten the battery life more than normal usage would. Avoid letting it sit on empty for too long; instead, keep it charged-up if you can. (REF.)
My battery behaves in a funny way. With moderate use it dissipates very fast. and then if I keep screen off for more than 10 mins then my battery starts regenerating automatically(5-7%)
I noticed a few times, with some of the phones or devices I used to own, that if you, for example, after charging the phone, let's say play a graphics intensive 3D game for 15 minutes, the battery meter will drop quite a lot(e.g. 15%). But if you leave it on stand-by immediately, you will notice that after some time, the battery meter will indicate with 3-5-7% more than before.
My battery life is under 2 hours in 3g continues downloading!
Sent from my LG-P500 using xda app-developers app
nundoo said:
I noticed a few times, with some of the phones or devices I used to own, that if you, for example, after charging the phone, let's say play a graphics intensive 3D game for 15 minutes, the battery meter will drop quite a lot(e.g. 15%). But if you leave it on stand-by immediately, you will notice that after some time, the battery meter will indicate with 3-5-7% more than before.
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I have also faced this but differently
At night my phone's battery was 78
And at the morning i got 82 %!!
Sent from my LG-P500 using xda app-developers app
nomancoolboy said:
I am using p500 from one and half years and i use it heavily so i have to charge it every day.
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I think it's "normal" to charge it every day!! if you use it!! i charge it at least one time a day..
Lithium battery's do last a long time but they do loose there charge and become weak. After a year and a half I would defiantly consider buying a new battery. I wouldn't recommend the cheap $3.00 battery's but I would look on eBay or amazon and find a stock o.e.m battery. Brand battery's are more expensive but last probably 3-5 times longer then cheap battery's. I've read and heard that lithium battery's are not suppose to get hot but they can get warm, if the battery gets hot then it can destroy the battery and won't hold a charge as long as it should.
It also depends on what ROM you are running and what applications you are running, all that can add up and drain your battery fast. I would change a battery on a phone about 5-7 months or maybe even up to a year. Depends on your budget and what you can afford. hope this helps
Sent from my Nexus 7 using Tapatalk 2
myawan said:
A Lithium-ion battery has normally 400-1200 charging cycles (Ref. Wiki).
Couple of things that shorten life span of a battery:
1) Complete discharging, it is recommended not to go below 20%
2) High temperature which implies that if you OC too much your device will heat up and battery life shortened
3) If you consume 50% of your device battery on day 1, recharge to 100% at night, and do the same thing on day 2, then you would have just finished up one charge cycle of its battery life. Constantly recharging a lithium ion battery does not shorten the battery life more than normal usage would. Hence constantly recharging a lithium ion battery does not shorten the battery life more than normal usage would. Avoid letting it sit on empty for too long; instead, keep it charged-up if you can. (REF.)
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Lg p500 battery have only 500 cycle times of life .
Btw,try to flash stock/gsnap 2.2 rom.
Sent from my LG-P500 using xda premium
My battery behaves in a funny way. With moderate use it dissipates very fast. and then if I keep screen off for more than 10 mins then my battery starts regenerating automatically(5-7%)
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Reset battery stats in recovery.
-- Sent from my TouchPad using Communities
Ok guys, so recently I'm starting to use my smarthphone ( xperia ray ) to do lots of things and one of it is as my Agenda. Now the real problem is, every time my phone is running out of battery I must charged it ( obviously -.- )
And everytime I charged it I always shut it down because people say that it's better to shut i down so the battery will have a long life
Can you guys tell me how to take good care of a battery ? And is it true what I said ?
( Sorry for my english -.- ):fingers-crossed:
I don't really think that offline charging will have any impact on battery life.
Anyway, from my experience the best way to conserve your battery health is to charge it in full cycles. That means not to charge it when it's on 40% but let it drain to almost empty or empty and then let it charge until it's full.
Your battery life will become worse with time. That's how rechargeable batteries work. Every battery type (Ni-MH, Ni-Cd, Li-ion etc.) has a different amout of recharge it can take. It won't recharge fine 100000 times and then after the 100001st time "die". It's life gradually shortens.
That being said, if you haven't used a phone/battery for a long period of time, it is always wise to drain it totally and charge it full for 4-5 times and then you will notice an improvement in battery life.
Also lower your display brightness. Display is eating most battery power, especially if you're using your phone a lot
CCVader13 said:
I don't really think that offline charging will have any impact on battery life.
Anyway, from my experience the best way to conserve your battery health is to charge it in full cycles. That means not to charge it when it's on 40% but let it drain to almost empty or empty and then let it charge until it's full.
Your battery life will become worse with time. That's how rechargeable batteries work. Every battery type (Ni-MH, Ni-Cd, Li-ion etc.) has a different amout of recharge it can take. It won't recharge fine 100000 times and then after the 100001st time "die". It's life gradually shortens.
That being said, if you haven't used a phone/battery for a long period of time, it is always wise to drain it totally and charge it full for 4-5 times and then you will notice an improvement in battery life.
Also lower your display brightness. Display is eating most battery power, especially if you're using your phone a lot
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Thx man !!! You helped me a lot
Sent from my Xperia Ray using xda app-developers app
Never over charge,like after charing 100%also never plug in to current,as it bring downs the battery performance later.....
I have wasted my 2 mobiles battery in same way.
I even fear for battery bust!
SENT FROM MONSTER ! ! !
HIT THANX OR I WILL JUST
CRY...
Battery life is affected by temperature, so try not to let your phone stay at high temperatures for too long
sanjaykumar.sanjay69 said:
Never over charge,like after charing 100%also never plug in to current,as it bring downs the battery performance later.....
I have wasted my 2 mobiles battery in same way.
I even fear for battery bust!
SENT FROM MONSTER ! ! !
HIT THANX OR I WILL JUST
CRY...
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Click to collapse
You can't overcharge your battery, that's a myth. It charges to 100% and then it stops charging, even if it's still connected to a power source. It starts charging again when it drops to 95% (hence why you sometimes see "97% Not charging" on your phone).
And yes, in some cases temperature can affect battery life but usually only in short-term. Still, it's a good idea not to leave the phone in direct sun in the summer or in your car in the summer. Extremely cold temperatures can affect its life too. Most batteries actually have written on them what temperatures they can withstand.
Sent from my Xperia X10 using xda app-developers app