Bad battery life! Help! - T-Mobile Samsung Galaxy S II SGH-T989

So i started using faux kernel and Juggernaut 4.1. I had about 16 hours of battery life. Now my phone drops from 100% to 94% in like 20 minutes. Any help or ideas? Thanks guys.
Sent from my SGH-T989 using XDA App

Download "battery calibration"
Follow steps provided within app
All fixed
Unless you Hella used your in 20 minutes to make it drop that fast
Sent from my SGH-T989 using XDA App

since you're rooted, you can use cwm(ClockWorkMode) Recovery, go to advance and clear battery stats(battery calibration)... or you can shut off you phone, let it charge 100%.. takeout the battery for about 50sec(inspect the battery for leakage"which could damage your phone, if it's leaking" if it's leaking replace your battery), put it back, plug your charger, turn you phone on, while plugged let it show the 100% charge on the notification bar then you should be good..

I have noticed that my battery life drops pretty quickly if i am doing a lot of browsing, etc on the phone.
If its in standby it loses 1% approx every 7-11 minutes.

jordanishere said:
If its in standby it loses 1% approx every 7-11 minutes.
Click to expand...
Click to collapse
I think it was normal, all i can think of is you leave wifi on, weak wifi signal when screen off. BTW im just saying

Im having some battery issues as well.. except ive done the battery calibration through the die hard battery script and by wiping my batter stats through CWM. ive tried both of these ways then using the phone for about a week after ive done either. the problem is that my phone wont let the battery fully drain.. or even close, ill show to have about 5% left and ill check the remaining mV through the die hard script and it will have 3615mV left, which according to the the script, should be about 40% remaining. fully charged battery has 4208mV at total capacity does anybody know what the mV level should be when the phone is less than 5% and how i can fix this?? I am getting pretty good life out the battery usually lasting from 22+ hours but if this is right i should getting alot more.

blchff04 said:
I am getting pretty good life out the battery usually lasting from 22+ hours but if this is right i should getting alot more.
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Click to collapse
22hrs sounds pretty good to me.
Sent from my Hercules using XDA App

jordanishere said:
22hrs sounds pretty good to me.
Its great compared to stock but Im on a mission to maximize the battery as much as possible and when i cant use the remainder 40% of the battery it gets frustrating...
Click to expand...
Click to collapse

Related

Charging from 95% to 100% takes 2 hours

Well lets say my battery is 35% when i get home, it takes about 45 mins to get to 95% then from there takes about 2 hours to get to 100%. Running CM7 on the Telus DHD.
I dont know if this happened with stock as i rooted as soon as i opened it
Try downloading CurrentWidget and then charge your phone until there are zero milliamperes showing on the widget. Then wipe your battery stats and reboot. This should calibrate the readings to be a bit more sensible/accurate, for both usage and charging.
As the battery is charging and nearing full capacity the current slows down thus making the charging process slower.
ErOR22 said:
As the battery is charging and nearing full capacity the current slows down thus making the charging process slower.
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Click to collapse
This does make sense. Guess im just too used to the iphone
equlizer said:
This does make sense. Guess im just too used to the iphone
Click to expand...
Click to collapse
It's not iOS, Android or WP7 - all Li-Ion batteries have to be charged that way. Just one of these OSes preffers not to give accurate information to its users about baterry charge, signal strenght etc. What you don't know can't hurt you seems to be Apple's moto. Still 2 hours for 95% to 100% is too much.
equlizer said:
Well lets say my battery is 35% when i get home, it takes about 45 mins to get to 95% then from there takes about 2 hours to get to 100%. Running CM7 on the Telus DHD.
I dont know if this happened with stock as i rooted as soon as i opened it
Click to expand...
Click to collapse
About 2.5 hours is what I'd expect it to take to charge from 35%
k well today i got home and the batt was 35% (heavy usage) and it only took about 45 mins to get to 90%. From there it goes much slower.
Going to CM7 I had the same problem with my battery being at 95%. I'm planning to drain completely, wipe battery stats immediately, then doing a full charge.
mine only takes just under 2hrs charging from empty to 100%.
It depends if you're charging it through your computer or the wall. If i charge mine through the computer it takes about 3 hours if the battery is completely empty. If i charge it through the wall, it uses about half the time, but the battery empties much faster. Some phones has so called "speed charging". That means that you can choose between good battery life but long chargr, or short charge time but bad battery life. It depends on how you charge it.
But, two hours from 95% is not normal.
Sent from my Desire HD using XDA Premium App
in4ra said:
Going to CM7 I had the same problem with my battery being at 95%. I'm planning to drain completely, wipe battery stats immediately, then doing a full charge.
Click to expand...
Click to collapse
This might be a clue to the cause of the problem. I'm now running stock ROM and being in the process of deciding if I should go for Revolution HD or stay on stock, I read numerous posts of battery stats problems. I think the OP should try to wipe the battery stats and see if that would help.

3500mAh Extended Battery From Amazon Question

I just recently bought a 3500mAh extended battery from amazon. (http://www.amazon.com/gp/product/B0042TY68C/ref=ox_sc_act_title_1?ie=UTF8&m=A1N1UQZS4G6GV9). I just got done fully charging it, i let it charge fully over night, just unplugged it and boom 10 minutes unplugged with me not even touching it just letting it sit on my desk we are down to 95%. I know you are suppost to cycle these batteries and stuff before u can actually see the fully life of it and i plan to do that. My question is i downloaded battery monitor widget and on the main screen its calling the battery a techno-Li-ion 1425/1500mAh battery. I know this isnt right ive cleared battery stats probably 10 times total now, through recovery and through the battery monitor widget app. Im hopping i didnt get ripped off and it just takes a few discharges for the phone to recognize the new battery? Any help would be appreciated.
I plan on letting the battery get to 15-20% and then charge it all the way up again and do these a few times, as well as clear the battery stats. This is what i read to do with new batteries? Please correct me if im wrong..
When using an extended battery you are not going to get a full charge unless you condition it or you could use a SBC kernel.
how much will u get out of it then without the sbc?
I bought this exact same battery. I used it at the time on my Evo unrooted. The first one that came to me (2 weeks late) wouldn't even power up. The second one they sent me I ran for about 3 weeks and put the stock battery back in. I was about to get 9 to 12 hours on my stock battery and with this extended I was getting the same. 2 weeks into using it the battery life got crappier everyday. To me it wasn't worth the added bulk for the same or less life. Since then I now run CM7 on the Tiamat sbc kernel with my stock battery that is almost a year old and get close to 18-20 hours out of an almost year old stock battery.
I use the SBC kernel, battery monitor widget, and the 3500mah battery. The thing lasts for days. Literally. When the green light comes on at "100%", that means NOTHING.
I ran it stone cold dead yesterday on purpose. Plugged it in at 10:00pm using my 800mah AC charger.
10:00pm: Plugged in, begins charging at ~700mah (max for my charger)
12:45am: Phone indicates 100% @ 4018mV but keeps charging at 700mah
2:00am: Charge rate ramping down @ 4197Mv
2:45am: Charge rate 100mah
3:00am: Charge rate 50mah
4:00am: Charge rate 15mah
4:30am: Charge rate 10mah which it remains at when fully charged (4198mV)
Stone cold dead to green light was only about 3 hours. BUT, stone cold dead to actually fully charged was really double that.
Obviously if the battery isn't dea, it will take conciderably less time. If you charge it with a PC, limiting the total current to 500mah, it will take conciderably longer.
So battery monitor widget calling it a 1500mAh battery doesn't mean anything? Right?
Sent from my PC36100 using XDA App
beanx said:
I just recently bought a 3500mAh extended battery from amazon. (http://www.amazon.com/gp/product/B0042TY68C/ref=ox_sc_act_title_1?ie=UTF8&m=A1N1UQZS4G6GV9). I just got done fully charging it, i let it charge fully over night, just unplugged it and boom 10 minutes unplugged with me not even touching it just letting it sit on my desk we are down to 95%. I know you are suppost to cycle these batteries and stuff before u can actually see the fully life of it and i plan to do that. My question is i downloaded battery monitor widget and on the main screen its calling the battery a techno-Li-ion 1425/1500mAh battery. I know this isnt right ive cleared battery stats probably 10 times total now, through recovery and through the battery monitor widget app. Im hopping i didnt get ripped off and it just takes a few discharges for the phone to recognize the new battery? Any help would be appreciated.
I plan on letting the battery get to 15-20% and then charge it all the way up again and do these a few times, as well as clear the battery stats. This is what i read to do with new batteries? Please correct me if im wrong..
Click to expand...
Click to collapse
Which battery monitor widget did you use?
The one by 3c06 white icon with a batteryin the middle and graph going through it.
Sent from my PC36100 using XDA App
beanx said:
The one by 3c06 white icon with a batteryin the middle and graph going through it.
Sent from my PC36100 using XDA App
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Click to collapse
Ahh... yes. I know now which one
I have the exact same battery and I'm wondering is the percent shown total BS? Mine is showing 87% with 4000mV left after charging overnight with an SBC kernal.
Sent from my PC36100 using XDA Premium App
Yea I'm at 8hr40min as of right now @ 17% battery. I've had my display backlight turned down and have been at work the whole day doin nothing with my phone but light texting and posting in this thread. With my stock battery I get around 12 hours before the phone almost dies with regular/mild use.I'm starting to think this battery was a rip off.. hopefully once I charge it back up it will last longer but idk... If anyone has any tips or tricks to make this battery last longer please help me out.
Sent from my PC36100 using XDA App
FYI, after 12hrs, i'm only at 70%. That is with very poor signal at work all day, and playing pandora on the way in.
beanx said:
So battery monitor widget calling it a 1500mAh battery doesn't mean anything? Right?
Sent from my PC36100 using XDA App
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Click to collapse
The newest version allows you to override that. Previously, the phone was telling it the capacity was 1500mah because that what the normal battery is supposed to be. The new version let me change it to 3500. So the % estimation should be accurate now. It is claiming I have 70% remaining or 2450mah. And 70% of 3500 is 2450. Now, where it came up with 2450, I have no idea.
The first time after ur charged the battery when u got it did u let it completely die or plug it in when it hit 10% or so?
Sent from my PC36100 using XDA App
My first full charge on the same battery I got the exact same behavior. I was on the Stock Kernal that came with CM7.
Second charge, after changing to the Tiamat SBC, my battery is screaming... 6+ hours of heavy usage (video, web, lots and lots of text and 30mins of calling) and I am still over 50%. By now, I would have had to charge the regular battery...
Very pleased with this thing...
well im about ready to unplug mine for the day and see how it goes, i fully charged it with the phone off with a wall charger. And have been cycling it witht he phone off by unplugging it when the light turns green, waiting for the light to turn off, then plugging it back in until the light turns from orange to green again. Ive been doing this for the last hour or so because somone in another thread about this battery said it help him out alot, i did unplug it when i first woke up and it dropped from 100 to 92 within 3 minutes so thats when i tried this cycling, i did unplug it in the middle after doing a dozen or more of these cycles and it staid at 100 for quiet a while then dropped to 99 after about 5-6 minutes of being unplugged and me browsing the web and market this being a huge improvement so id have to say the cycling of the battery does help idk how or why but whatever im not complaining ill post back later tonight once i see how the battery acts.
So far I've had terrible luck with this battery can't get more time than stock. Charging it with an SBC kernal and it doesn't help, was avoiding spending 60 bucks on a battery but I think Ive no other choice.
Sent from my PC36100 using XDA Premium App
im at 2 hours with it right now, down to 70% i used it pretty heavily about 30min ago to reflash cm7, savagedzen sbc kernal, download all my apps, setup launcher pro plus, and re confiugre everything. It dropped rather quickly from 100 to where its at now so i guess we will see, BMW is estimating 10hr40min remaining battery life right now which would put it at about where my stock battery would die at around 12-13 hours, so we will see :-\
*edit*
BMW now saying 12hr10min at 70% battery? weirddd...
*edit*
BMW now saying 16hr23min at 65% battery, ive been using it moderately, used 4G for a second and WiFi for a few minutes as well...
Here's why the drop...the Evo along with other phones use bump charging to charge the battery meaning when the light is green you have anywhere between
90 and 100 percent at 89 percent down to zero you should not see such a dramatic drop...its a Evo thing the large drop
Sent from my PC36100 using XDA App
MCL1981 said:
FYI, after 12hrs, i'm only at 70%. That is with very poor signal at work all day, and playing pandora on the way in.
The newest version allows you to override that. Previously, the phone was telling it the capacity was 1500mah because that what the normal battery is supposed to be. The new version let me change it to 3500. So the % estimation should be accurate now. It is claiming I have 70% remaining or 2450mah. And 70% of 3500 is 2450. Now, where it came up with 2450, I have no idea.
Click to expand...
Click to collapse
How do you override that value? I looked all through the widget settings and I'm not seeing it.
majorkillin said:
How do you override that value? I looked all through the widget settings and I'm not seeing it.
Click to expand...
Click to collapse
go into bmw, go to settings, monitoring preferences, second from the bottom battery capacity, just change that value from 1500 to 3500, took me a while to find it as well.

Best way to Calibrate my Battery?

I have read through different forums and posts and haven't found a definite way to properly calibrate my battery..i have tried several methods but my battery is still awful...for example, my phone can be at 50% and when i do a normal reboot...my phone is suddenly at 21%??..and it stays at that number for a while...Can i get some suggestions for the best way to calibrate my battery for the epic...
kobby2k6 said:
I have read through different forums and posts and haven't found a definite way to properly calibrate my battery..i have tried several methods but my battery is still awful...for example, my phone can be at 50% and when i do a normal reboot...my phone is suddenly at 21%??..and it stays at that number for a while...Can i get some suggestions for the best way to calibrate my battery for the epic...
Click to expand...
Click to collapse
Are you on stock? You are not using quick boot are you? That is a known bug in that app.
I am on SRF 1.1.1 and when I switched over I did the battery calibration where you charge while on (always to 100%), unplug, charge while off, unplug, charge while on, unplug and then wipe battery stats. I then downloaded and ran the battery calibration tool, ran my battery out and charged to full. It's a monster now. I can really say I'm one of those people who wandered around for an hour randomly doing things and checking my phone as usual and where I would have normally been at 94%, which is fine life after an hour, it just turned to 99% at the 1 hour point. I will keep watching to see if performance is better at first and wanes or what.
The Root said:
I am on SRF 1.1.1 and when I switched over I did the battery calibration where you charge while on, unplug, charge while off, unplug, charge while on, unplug and then wipe battery stats. I then downloaded and ran the battery calibration tool, ran my battery out and charged to full. It's a monster now. I can really say I'm one of those people who wandered around for an hour randomly doing things and checking my phone as usual and where I would have normally been at 94%, which is fine life after an hour, it just turned to 99% at the 1 hour point. I will keep watching to see if performance is better at first and wanes or what.
Click to expand...
Click to collapse
Where did you get this battery calibration tool? The market?
I think his issue is the big percentage changes upon reboot which is a bug and not an actual percentage drop. It was especially noted with Quick Boot.
kennyglass123 said:
Where did you get this battery calibration tool? The market?
Click to expand...
Click to collapse
Yeah, it's by NeMa and requires root.
kennyglass123 said:
I think his issue is the big percentage changes upon reboot which is a bug and not an actual percentage drop. It was especially noted with Quick Boot.
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Click to collapse
Sure, but if he stops using reboot and calibrates his battery settings, won't that fix things?
Edit: poor terminology
The Root said:
Sure, but if he stops using reboot and calibrates his battery settings, won't that fix things?
Edit: poor terminology
Click to expand...
Click to collapse
Yes. But he hasn't come back to confirm or deny this is what he is doing. Not even sure if he is rooted or not. Thanks on the Nema tip. Gonna download it now.
Yeah that app is awesome. I use it all the time.
Sent From My Evo Killer!
No I don't use quickboot or any special app to get to recovery....my battery life n percentages are messed up n I am trying to find the best way to calibrate my battery....I'm currently running srf with cwn 3.0.0.6 with ext4...everything else is normal but my battery life is horrible
Sent from my SPH-D700 using XDA App
Im havng the same exact problem, i power down and back on and the percentage drops drasticly. Im on SRF 1.1.0.
Follow my post exactly. I don't know which battery calibration kicked the weirdness, but it's totally stable now.
Sent from my SPH-D700 using XDA App
The hardest part is finding what will tun out the battery fastest. I suggest flashlight screen on bright blue with pandora, tunein, and mlb running a live game.
Sent from my SPH-D700 using XDA App
kobby2k6 said:
No I don't use quickboot or any special app to get to recovery....my battery life n percentages are messed up n I am trying to find the best way to calibrate my battery....I'm currently running srf with cwn 3.0.0.6 with ext4...everything else is normal but my battery life is horrible
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
Don't count a reboot and a major change in percentage as horrible battery life. I have been getting that recently because I beta test and when it drops like 40% on a reboot I power down, plug it into a charger, it goes back to where it should be, then I power back on and it is back at the level before the reboot. It is a bug somewhere. As for your normal usage, how many hours do you get on a full charge without any reboots? Users report anywhere from 10 hours to 18 hours with some usage (of course there are a few extraordinary cases out there).
kennyglass123 said:
Don't count a reboot and a major change in percentage as horrible battery life. I have been getting that recently because I beta test and when it drops like 40% on a reboot I power down, plug it into a charger, it goes back to where it should be, then I power back on and it is back at the level before the reboot. It is a bug somewhere. As for your normal usage, how many hours do you get on a full charge without any reboots? Users report anywhere from 10 hours to 18 hours with some usage (of course there are a few extraordinary cases out there).
Click to expand...
Click to collapse
If I use like the poweruser I am...it lasts about 4 to 5 hours
..that's continuously playing music with my screen off...n sometimes playing a gameloft game or PES 2011 for 15 mins and checking engadget every 20 mins or so( no Widgets btw)...when I play music for an hour with the screen off, I get atleast a 6% drain....it used to to be 3% drain or less the first time I got the phone (a week and half ago)...I am just trying to get the best life out of my battery
kennyglass123 said:
Don't count a reboot and a major change in percentage as horrible battery life. I have been getting that recently because I beta test and when it drops like 40% on a reboot I power down, plug it into a charger, it goes back to where it should be, then I power back on and it is back at the level before the reboot. It is a bug somewhere. As for your normal usage, how many hours do you get on a full charge without any reboots? Users report anywhere from 10 hours to 18 hours with some usage (of course there are a few extraordinary cases out there).
Click to expand...
Click to collapse
Are you streaming music or playing mp3s stored on the phone? If you are streaming and the 3G or 4G keeps dropping out it will kill your battery constantly reconnecting.

[Q] Questions about battery life.

-Does keeping the phone plugged in via USB (when battery is at 100%) decrease battery life?
-Approximately how long should the battery last if the phone idles? If the screen is on 24/7?
-Are these batteries any good compared to the stock one?
IamaznX said:
-Does keeping the phone plugged in via USB (when battery is at 100%) decrease battery life?
-Approximately how long should the battery last if the phone idles? If the screen is on 24/7?
-Are these batteries any good compared to the stock one?
Click to expand...
Click to collapse
1.) Plugging in the phone while charged does decrease the battery life as you can only charge a battery for lets say 1000 cycles or so.
2.) Battery life depends on how long you use your phone, your ROM so I couldn't say. But my phone with the screen on lasts about 8 hours (SGH-T989)
3.) Check the reviews, it has five stars so I would assume that the battery is pretty good.
nivekx9 said:
1.) Plugging in the phone while charged does decrease the battery life as you can only charge a battery for lets say 1000 cycles or so.
2.) Battery life depends on how long you use your phone, your ROM so I couldn't say. But my phone with the screen on lasts about 8 hours (SGH-T989)
3.) Check the reviews, it has five stars so I would assume that the battery is pretty good.
Click to expand...
Click to collapse
Is losing about 30% battery life overnight (about 7 hours) with the screen off normal?
IamaznX said:
Is losing about 30% battery life overnight (about 7 hours) with the screen off normal?
Click to expand...
Click to collapse
Ehh I wouldn't think so...unless something is waking it up every now and then like a app or something...I normally loose about 10% if that if I let it sit over night
Sent from my SAMSUNG-SGH-T989 using xda premium
IamaznX said:
Is losing about 30% battery life overnight (about 7 hours) with the screen off normal?
Click to expand...
Click to collapse
Not at all. I would use a battery monitor app to see what's draining the battery because that's very excessive drainage.
I can't imagine how much it drains when you're actually using it...
what rom/kernel are you using?
I agree with what others here have said, but just to add a little something, I heard that for the best battery "life" its best to try and keep it between 20% to 90%. Don't quote me, I heard it on one of those YouTube tech channels, I wonder if that is true. I always thought that it was best to completely kill the battery and then fully charge it.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
inocent3 said:
I agree with what others here have said, but just to add a little something, I heard that for the best battery "life" its best to try and keep it between 20% to 90%. Don't quote me, I heard it on one of those YouTube tech channels, I wonder if that is true. I always thought that it was best to completely kill the battery and then fully charge it.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
That's for a new battery. Only for a couple full cycles. Else it's best to charge when you hit 15-20 and charge uninterrupted to 100.
Sent from my SGH-T989

20 minutes at 100% charge.

Hello everyone,
I observed a strange behavior of my arc s , when the phone reaches 100% charge and later when i unplug it my phone spends almost 20 minutes at this point and after some time it starts to discharge ie. it comes down by 1%.
But if i use it hear after it discharges rapidly.
I find this behavior very odd !
Can anyone explain me this behavior ???
Thank you in advance.
Sent from my LT18i using xda app-developers app
Check battery use
Check battery use to see what is consuming the battery
Maybe WIFI and sleep policy,Bluetooth,Network type WCDMA/GSM ,GPS and accounts sync ?
Observe the diagram or the slope in the battery use to see is your battery draining fast or is it normal,also what rom and kernel are you using
Isn't that the normal behaviour of a battery coming from a smartphone? .-. Mine's like.. 20 minutes on 100% before starting going down, and it doesn't affect my overall battery life at all..
!!!!
Phenomzye said:
Isn't that the normal behaviour of a battery coming from a smartphone? .-. Mine's like.. 20 minutes on 100% before starting going down, and it doesn't affect my overall battery life at all..
Click to expand...
Click to collapse
try to change kernel and rom / buy new battery
Im using maxmod ICS(V 1.1) and stock kernel.
Sent from my LT18i using xda app-developers app
kzizo said:
Check battery use to see what is consuming the battery
Maybe WIFI and sleep policy,Bluetooth,Network type WCDMA/GSM ,GPS and accounts sync ?
Observe the diagram or the slope in the battery use to see is your battery draining fast or is it normal,also what rom and kernel are you using
Click to expand...
Click to collapse
I have observed all of that.
Everything is fine, as the display uses the battery predominantly.
My guess is that is a sign for use to change the battery.
And also i see spikes in chart instead of going down the charge goes up and down.
Sent from my LT18i using xda app-developers app
how old is the battery?
how old is the battery ?if the spike goes up that means it is connected to USB and the phone is charging .attached is my battery usage 7 % in 11 hours the slope is continuously going down as it's been unplugged and running on battery only ,phone and battery are a year and half old
The "spikes" you refer to are because your battery isnt well calibrated...
You can charge it fully, use it and when its around 5% charge it again to full. And if you delete the battery stats your battery must sette down over some day or two.
But for a better response you need to upload a picture of your battery stats.
My battery sometimes stays in 100% some minutes, some other times is goes down to 99 very quicky, but its normal for me cause it usually lengths for two days + with normal use
17th_angel said:
The "spikes" you refer to are because your battery isnt well calibrated...
You can charge it fully, use it and when its around 5% charge it again to full. And if you delete the battery stats your battery must sette down over some day or two.
But for a better response you need to upload a picture of your battery stats.
My battery sometimes stays in 100% some minutes, some other times is goes down to 99 very quicky, but its normal for me cause it usually lengths for two days + with normal use
Click to expand...
Click to collapse
Thank you.
I will calibrate and put the graph after usage.
Sent from my LT18i using xda app-developers app
kzizo said:
how old is the battery ?if the spike goes up that means it is connected to USB and the phone is charging .attached is my battery usage 7 % in 11 hours the slope is continuously going down as it's been unplugged and running on battery only ,phone and battery are a year and half old
Click to expand...
Click to collapse
Its a year old.
Yes i totally agree the oly time the graph should go up is when its plugged in and not wen unplugged.
But i sometimes see the spikes when unplugged.
Nevertheless it has not degraded the performance.
Sent from my LT18i using xda app-developers app
i agree with 17_Angel,upload a picture of your battery stats.

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