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Battery Calibration - Once and for all!

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
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
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.
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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 %.

battery percentage

I don't know if i'm being paranoid or what about my battery %, but whenever my phone reaches around close to 30% it goes down instantly to 19% in like a minute all the time.. Not sure if my phone isn't used to my rom yet but it did that when i flashed sc7 and sc6 (gb).. Has anyone experienced this issue before, or my battery needs to be replaced?

jangeles323 said:
I don't know if i'm being paranoid or what about my battery %, but whenever my phone reaches around close to 30% it goes down instantly to 19% in like a minute all the time.. Not sure if my phone isn't used to my rom yet but it did that when i flashed sc7 and sc6 (gb).. Has anyone experienced this issue before, or my battery needs to be replaced?
Click to expand...
Click to collapse
Wipe battery stats?
If that even works on this device, I know it was just placebo on Samsung devices.

Yes you wipe battery stats through custom recovery. But you need to calibrate your battery as well. Each time you switch ROMs, be sure to do this. I was having same issue except mine would hit 30% then instantly drop to 5%. Calibrating the battery and a few setcpu tweaks fixed my insane drainage.
Sent from my MB865 running a beastly CM10

Okay thank you, when i charge it 100% i will wipe battery stats because it seemed to annoy the heck outta me. When it reaches 100% i will wipe battery stats, i don't know why i didn't think of that. But yes i believe my battery needs to be calibrated

jangeles323 said:
Okay thank you, when i charge it 100% i will wipe battery stats because it seemed to annoy the heck outta me. When it reaches 100% i will wipe battery stats, i don't know why i didn't think of that. But yes i believe my battery needs to be calibrated
Click to expand...
Click to collapse
Go grab the Battery Calibration app from Google Play, it will alert you when the battery reaches full charge and you can re-calibrate. It'll also show the mAh value when fully charged, something good to observe...
Sent from my HTC One S

Apex_Strider said:
Go grab the Battery Calibration app from Google Play, it will alert you when the battery reaches full charge and you can re-calibrate. It'll also show the mAh value when fully charged, something good to observe...
Sent from my HTC One S
Click to expand...
Click to collapse
yeah i read your post on battery calibration and download watchdog to see if there is any rogue apps sending data in the background. But for some reason i can't get my battery to 100% its always stuck at 99%. so i just calibrate it at 99 at 4296( (not sure on mv)

jangeles323 said:
yeah i read your post on battery calibration and download watchdog to see if there is any rogue apps sending data in the background. But for some reason i can't get my battery to 100% its always stuck at 99%. so i just calibrate it at 99 at 4296( (not sure on mv)
Click to expand...
Click to collapse
Try the charging trick in my 2nd post, might solve that for you...
Sent from my HTC One S

Apex_Strider said:
Try the charging trick in my 2nd post, might solve that for you...
Sent from my HTC One S
Click to expand...
Click to collapse
DId that, didn't fix the issue.. But its nothing really significant to me because once it reaches 100 it goes down to 99 rather quickly.. but it stays at 99 for awhile unless i use it
edit: well i just reflashed a rom yesterday.. maybe i need to do more calibrations

jangeles323 said:
DId that, didn't fix the issue.. But its nothing really significant to me because once it reaches 100 it goes down to 99 rather quickly.. but it stays at 99 for awhile unless i use it
edit: well i just reflashed a rom yesterday.. maybe i need to do more calibrations
Click to expand...
Click to collapse
The full charge (100%) to 99% immediate drop is completely normal with this phone...
Sent from my HTC One S

Apex_Strider said:
The full charge (100%) to 99% immediate drop is completely normal with this phone...
Sent from my HTC One S
Click to expand...
Click to collapse
yeah i'm completely aware of that.. which isn't a problem for me anyways.. But it should show that it can reach 100% on the percentage when charging but doesn't.. Anyways that isn't an issue anyways its the drainage from 30 down to 19% in an instant.. which i hopefully fixed when the battery is now calibrated thanks to that app

Hmmm I just saw my battery went from 30 down to 20 again.. maybe my battery isn't calibrated enough? i followed the steps in charging it phone off and then calibrating the battery with the app..

jangeles323 said:
Hmmm I just saw my battery went from 30 down to 20 again.. maybe my battery isn't calibrated enough? i followed the steps in charging it phone off and then calibrating the battery with the app..
Click to expand...
Click to collapse
Which App? All you need to do is go into CWM and wipe battery stats. Anything else you use will not work right on this phone. After that it needs to be 3 "FULL" battery cycles (fully charged to fully dead, or to 5-10% at least, then fully charged again).

jimbridgman said:
Which App? All you need to do is go into CWM and wipe battery stats. Anything else you use will not work right on this phone. After that it needs to be 3 "FULL" battery cycles (fully charged to fully dead, or to 5-10% at least, then fully charged again).
Click to expand...
Click to collapse
battery calibration app.. I used it to calibrate it but I usually only charge my phone when it reaches under 10% or so..
Sent from my MB865 using xda app-developers app

I have the exact same issue as does my wife. She is on stock ics and has never done anything on her phone whereas I am on svc7 rooted and have done everything anyone ever recommended to eliminate that loss from 30% to 19%. No avail.
Sent from my MB865 using xda app-developers app

Bump...

Pilgrimtozion said:
I have the exact same issue as does my wife. She is on stock ics and has never done anything on her phone whereas I am on svc7 rooted and have done everything anyone ever recommended to eliminate that loss from 30% to 19%. No avail.
Sent from my MB865 using xda app-developers app
Click to expand...
Click to collapse
How quickly is the discharge from 30-19%? Can you attach a log of wakelocks found? Have you tried another battery?
Brought to you by Carl's Jr.

Apex_Strider said:
How quickly is the discharge from 30-19%? Can you attach a log of wakelocks found? Have you tried another battery?
Brought to you by Carl's Jr.
Click to expand...
Click to collapse
Well same thing here..switched off the screen and when switched back on whoa battery is at 19% from 30%
Sent from my ME865 using xda app-developers app

Literally from one second to the next it goes down 10% or so. Don't have another battery but my wife has the same thing. Does it after a factory reset as well as after installing 60 apps. Before and after battery calibration. None of it makes any difference.
The only other thing I can think of is that a certain battery percentage kicks in a certain lower clock speed and that that process kicks 10% of the battery. Not likely in my mind, but possible.
Sent from my MB865 using xda app-developers app

After about 3 weeks after making this thread I still get the same thing.. From 30% down to 20% in seconds sometimes it happens at around 40% which is utterly absurd

I have also noticed this problem sometimes, when I do run it that low. My jump is from around 30 to 20 percent. I did wipe stats a couple of days ago after I flashed swiftytrix from ICS leak 1. However, after wipe stats, I didn't discharge to completely dead, but close to it. Does that matter?

Battery charges slowly

Hi everyone I have a problem.
When I charge my battery it charges normally to 70 % after that it takes about 3 to 4 hours to charge till it reaches 100 % but if I reboot my device when it's charged to about 75% the Battery is suddenly fully charged.
I have tried to calibrated it but it didn't help.
I have this problem on every rom. What can the cause of the problem be.
It used to charge normally at first when I bought.
I have my desire s for one year now.
My device is rooted via revolutionary and s-off.
Thanks in advance.

look at this
also post your questions here. [url =http://forum.xda-developers.com/showthread.php?t=1460553] battery calibration is a myth[/url]
Sent from my supercharged :tank:

.
badflife said:
Hi everyone I have a problem.
When I charge my battery it charges normally to 70 % after that it takes about 3 to 4 hours to charge till it reaches 100 % but if I reboot my device when it's charged to about 75% the Battery is suddenly fully charged.
I have tried to calibrated it but it didn't help.
I have this problem on every rom. What can the cause of the problem be.
It used to charge normally at first when I bought.
I have my desire s for one year now.
My device is rooted via revolutionary and s-off.
Thanks in advance.
Click to expand...
Click to collapse
Have a look at your battery for any swelling or signs of damage on the battery, it is possible that your battery is shot.

Re: battery...
Could it be that with the reboot,
device wipes its battery stats and looses the info?
(Or is it happening only during flash)
my phone has that same symptoms, but it happens mainly
, when i flash a rom, forgetting fully charge the battery before- after reboot it indicates full charge..
Edit: according to amidabuddha, htc has implemented safety switch in to charging procedure,
, when the load reaches certain level- it slows down
Then begins to indicate ' fully loaded' before
It realy gets to it- that is suposed to lengthen live of the battery,
but three to four hours sounds unusual...
Edit 2. When during charging battery gets to hot, charging stops as well...

Me too, charging from 0-70% needs 1,5-2 hours then 70-95% needs 4 hours, 95-100% just needs couple minutes, Idk why this happens, the battery stat says health...
When in the middle of charging I reboot the device, the level rises up anomaly, ex. The device is charging, and the level is 12 and I reboot, when I get back to homescreen it says 45%..
Also, the led changes from orange to yellow not when the level on fully charged, usually on the 90%.. my device is almost 2 year old
Sent from my HTC Desire S
Tapatalk 2

otterbvrn said:
Me too, charging from 0-70% needs 1,5-2 hours then 70-95% needs 4 hours, 95-100% just needs couple minutes, Idk why this happens, the battery stat says health...
When in the middle of charging I reboot the device, the level rises up anomaly, ex. The device is charging, and the level is 12 and I reboot, when I get back to homescreen it says 45%..
Also, the led changes from orange to yellow not when the level on fully charged, usually on the 90%.. my device is almost 2 year old
Sent from my HTC Desire S
Tapatalk 2
Click to expand...
Click to collapse
Me too Sometimes when charging stop @82% but after reboot become full 100%
Sent from my droid hTC Saga

I also had this problem, but when I charge it offline phone charges fast.

mujeeb999 said:
I also had this problem, but when I charge it offline phone charges fast.
Click to expand...
Click to collapse
duh, it's because nothing is draining the battery while phone is shut down.
Sent from my supercharged :tank:

hisname said:
duh, it's because nothing is draining the battery while phone is shut down.
Sent from my supercharged :tank:
Click to expand...
Click to collapse
no, there is much difference in time.

From my experience, this behaviour is due to battery age. It started happening after about a year for me. I bought a new battery and the problem went away.
But I never had any real problems as a result of the slow charging of the old battery. If you recharge overnight, then it will have sufficient time to fully charge.
Based on what I now know, I wouldn't replace the battery until it stops holding its charge.
Sent from my HTC Desire S

BillGoss said:
From my experience, this behaviour is due to battery age. It started happening after about a year for me. I bought a new battery and the problem went away.
But I never had any real problems as a result of the slow charging of the old battery. If you recharge overnight, then it will have sufficient time to fully charge.
Based on what I now know, I wouldn't replace the battery until it stops holding its charge.
Sent from my HTC Desire S
Click to expand...
Click to collapse
Have you seen this? http://forum.xda-developers.com/showthread.php?p=38053660
“A computer once beat me at chess, but it was no match for me at kick boxing.” - Emo Philips

[HowTo] Calibrate your Li-ion Battery Perfectly

Many of My Friends are facing Problem With Battery as Rom shows wrong information about remaining Battery %... As a result your phone goes off and when you start your Phone again it starts to show different % battery that mean that your battery is not Calibrate.. I am making this guide so that every one on this world may enjoy their phone for long time...
Warning Do at your own RISK...! Dont do it again and again
Steps you need to Do ​-1 First thing you need to do is let your battery goes to 0%.. then again start your phone(Don't plug in charger) and repeat 1st step until your phone denies to turn on back..
-2 Then Charge your phone in Switched off mode to 100%
-3 Unplug your charger
-4 On phone
-5 Your phone is going to show % of battery lesser than 100%
-6 Charge your phone again in on mode to 100%
-7 Unplug your charger
-8 Restart your phone and repeat Steps from 4 to 8 again and again until on every restart u battery % shows about 97%to100%
-9Next step is to calibrate your battery Download free app from plat Store that is Battery Calibration
-10 Calibrate your Battery with the help of that app and make sure that your Battery % is 100
-11 After Calibration Use ur Battery Upto 0%
-12 Then Charge it again and Your battery will be Calibrated...
Enjoy..
Hit Thanks ​

shreyans4020 said:
Many of My Friends are facing Problem With Battery as Rom shows wrong information about remaining Battery %... As a result your phone goes off and when you start your Phone again it starts to show different % battery that mean that your battery is not Calibrate.. I am making this guide so that every one on this world may enjoy their phone for long time...
Enjoy..
Hit Thanks ​
Click to expand...
Click to collapse
DON'T ever do this! Discharging a Li-ion battery completely WILL decrease your battery life.
Next, the battery calibration app is nothing more but a hoax. It only deletes a file containing the battery stats which is ONLY used in the battery statistics screen in settings.
So please, DON'T!

It's true you get the same result from the battery calibrate app by wiping battery stats in recovery. Draining your battery does decrease battery life of li-ion batteries, same goes for your laptop. The theory to cycle your battery is a myth and actually wrecks your battery.
Sent from my GT-i9100 using Tapatalk 2

bugadani said:
DON'T ever do this! Discharging a Li-ion battery completely WILL decrease your battery life.
Next, the battery calibration app is nothing more but a hoax. It only deletes a file containing the battery stats which is ONLY used in the battery statistics screen in settings.
So please, DON'T!
Click to expand...
Click to collapse
The 0% reported by the operating system is actually a bit higher than the voltage at which li-ion batteries will become damaged. Any modern phone should not allow you to discharge the battery to the point where it could cause damage.
Also there was an employee from Google IIRC that said wiping battery stats was useless because its only a file that keeps track of what apps used the battery and it wiped automatically when charged to 100%.

bugadani said:
DON'T ever do this! Discharging a Li-ion battery completely WILL decrease your battery life.
Next, the battery calibration app is nothing more but a hoax. It only deletes a file containing the battery stats which is ONLY used in the battery statistics screen in settings.
So please, DON'T!
Click to expand...
Click to collapse
Well when there is fall in battery from 100% to zero in 10 min then u have to calibrate
I am not saying to calibtate it daily... as i said you have to go to zero once to complete one cycle..

spunker88 said:
The 0% reported by the operating system is actually a bit higher than the voltage at which li-ion batteries will become damaged. Any modern phone should not allow you to discharge the battery to the point where it could cause damage.
Also there was an employee from Google IIRC that said wiping battery stats was useless because its only a file that keeps track of what apps used the battery and it wiped automatically when charged to 100%.
Click to expand...
Click to collapse
True.. i m getting what u want to say about labor force..

shreyans4020 said:
Well when there is fall in battery from 100% to zero in 10 min then u have to calibrate
Click to expand...
Click to collapse
I admit, when that happens, the battery circuit is probably in a dumb state and it _may_ be useful then. But doing this regularly is incredibly dangerous for the battery. Yes, some phones bias the battery reading but the post suggests to actually force it empty while turning it back on and on and on and that really kills it.
Still, using the app is just pure nonsense.

bugadani said:
I admit, when that happens, the battery circuit is probably in a dumb state and it _may_ be useful then. But doing this regularly is incredibly dangerous for the battery. Yes, some phones bias the battery reading but the post suggests to actually force it empty while turning it back on and on and on and that really kills it.
Still, using the app is just pure nonsense.
Click to expand...
Click to collapse
No post suggest that drain battery once to zero then charge it again and again upto actual 100%
Sent from my Karbonn A5 using xda app-developers app

shreyans4020 said:
No post suggest that drain battery once to zero then charge it again and again upto actual 100%
Sent from my Karbonn A5 using xda app-developers app
Click to expand...
Click to collapse
How about the 1st point of the first post? "Drain it to 0 then turn it on and on again until it doesnt turn on anymore"?
You could brick an hp touchpad by doing this.

bugadani said:
How about the 1st point of the first post? "Drain it to 0 then turn it on and on again until it doesnt turn on anymore"?
You could brick an hp touchpad by doing this.
Click to expand...
Click to collapse
Because 0% shown by the phone is.not actually 0% to gain that actual 0% we have to do that
Sent from my Karbonn A5 using xda app-developers app

You do realize why they make the reported 0% above the actual 0%. If you drain a lithium ion battery to actual 0% you'll permanently damage it. Also calibration is only useful if you want the OS to read the battery percentage more correctly. Lithium ion batteries themselves work perfectly fine with partial charge cycles.

spunker88 said:
You do realize why they make the reported 0% above the actual 0%. If you drain a lithium ion battery to actual 0% you'll permanently damage it. Also calibration is only useful if you want the OS to read the battery percentage more correctly. Lithium ion batteries themselves work perfectly fine with partial charge cycles.
Click to expand...
Click to collapse
Actually your phone will not turn on before damage point so don't worry about that ...
Sent from my Karbonn A5 using xda app-developers app

shreyans4020 said:
Actually your phone will not turn on before damage point so don't worry about that ...
Sent from my Karbonn A5 using xda app-developers app
Click to expand...
Click to collapse
That doesn't make any sense - you're stating in that post that turning on the phone damages the battery.
I will state this again: if you force your phone on and on again until it doesn't react, you may and on the long run probably will damage your battery. If your battery is not removable, this can also easily brick your device as seen with HP Touchpads.
If you feel that you must do something, simply drain the battery _once_ then charge it. This is the only thing that a sane electric engineer will ever advise.

Well that worked on my phone... i said that do at your own risk.... actually i am saying the same thing that drain your battery.. but if battery is not calibrate sometimes phone goes off even on 36% and if u charge at that point to hundread then that method will not work...
Sent from my Karbonn A5 using xda premium

Thank us so much working perfectly for me

iiTian said:
Thank us so much working perfectly for me
Click to expand...
Click to collapse
Press the thanks button

:good:
DraXonic said:
Many of My Friends are facing Problem With Battery as Rom shows wrong information about remaining Battery %... As a result your phone goes off and when you start your Phone again it starts to show different % battery that mean that your battery is not Calibrate.. I am making this guide so that every one on this world may enjoy their phone for long time...
Warning Do at your own RISK...! Dont do it again and again
Steps you need to Do ​-1 First thing you need to do is let your battery goes to 0%.. then again start your phone(Don't plug in charger) and repeat 1st step until your phone denies to turn on back..
-2 Then Charge your phone in Switched off mode to 100%
-3 Unplug your charger
-4 On phone
-5 Your phone is going to show % of battery lesser than 100%
-6 Charge your phone again in on mode to 100%
-7 Unplug your charger
-8 Restart your phone and repeat Steps from 4 to 8 again and again until on every restart u battery % shows about 97%to100%
-9Next step is to calibrate your battery Download free app from plat Store that is Battery Calibration
-10 Calibrate your Battery with the help of that app and make sure that your Battery % is 100
-11 After Calibration Use ur Battery Upto 0%
-12 Then Charge it again and Your battery will be Calibrated...
Enjoy..
Hit Thanks ​
Click to expand...
Click to collapse

This is why you shouldn't/ need not calibrate your batteries.. It'll do you more harm than good.
http://batteryuniversity.com/learn/article/battery_calibration

are we in need to wipe battery status for once in the recovery

What about for me, me tab has been saying 1% the past 3 hours and I've been using it and trying to kill it so hard but whatever I do it won't die. I want to "truly" get it to 1% or even 0% so I can then charge it back up to 100% in hopes of calibrating the battery to show what my actual % is. Any help will be appreciated greatly.

Charging time

Hello, I have bought rooted htc sensation and am very upset with it's charging time, it takes about one hour to charge 10% of battery. Example today I started charging it at 7:05 when it had 49%of battery. Now it's 11:06 and battery shows 88%. I know it's not normal. Is there any way how to fix it, or maybe test my phone somehow? Should new battery solve this problem?

domukas00 said:
Hello, I have bought rooted htc sensation and am very upset with it's charging time, it takes about one hour to charge 10% of battery. Example today I started charging it at 7:05 when it had 49%of battery. Now it's 11:06 and battery shows 88%. I know it's not normal. Is there any way how to fix it, or maybe test my phone somehow? Should new battery solve this problem?
Click to expand...
Click to collapse
Try deleting battery stats in recovery, this can lead to misreading. Also, usually the battery is higher than the percentage shown, just reboot your phone and you'll see how much battery is left (one time it showed me 2% when I actually had 45%, but that's because I put my phone in a -20C freezer).

astar26 said:
Try deleting battery stats in recovery, this can lead to misreading. Also, usually the battery is higher than the percentage shown, just reboot your phone and you'll see how much battery is left (one time it showed me 2% when I actually had 45%, but that's because I put my phone in a -20C freezer).
Click to expand...
Click to collapse
Can I use any application for deleting battery stats (this phone is rooted)?

domukas00 said:
Can I use any application for deleting battery stats (this phone is rooted)?
Click to expand...
Click to collapse
Try the 'battery calibration' app on the play store, I believe it can do this. But keep in mind that the battery an lose it's calibration with time, and even if uncalibrated, it will last about the same (although the OS starts saving at 30%).

Battery calibration didn't helped. But I noticed strange thing:
My friend also has htc sensation and his battery fully charges in 4hours. I exchanged my battery with him and charging time is same! He fully charged my battery from 14% to 100% 4 hours and my phone still charges very slow. I started charge his battery from 44%, at first it was charging very fast, but after 4hours it charged only to 88%. I rebooted phone and then it showed 100%. Where is the problem? My phones charges very slow with any battery. I don't want to reboot it every time to show 100%

domukas00 said:
Hello, I have bought rooted htc sensation and am very upset with it's charging time, it takes about one hour to charge 10% of battery. Example today I started charging it at 7:05 when it had 49%of battery. Now it's 11:06 and battery shows 88%. I know it's not normal. Is there any way how to fix it, or maybe test my phone somehow? Should new battery solve this problem?
Click to expand...
Click to collapse
Change ur charger ( wire and adapter ) as I also faced that on by note 2(charger only 10% in 1 h) and when I changed by charger it started to charge like hell , then I realised that it was the charger fault(even if it original charger) and not phone
Sent from my HTC Sensation using Tapatalk 4

domukas00 said:
Battery calibration didn't helped. But I noticed strange thing:
My friend also has htc sensation and his battery fully charges in 4hours. I exchanged my battery with him and charging time is same! He fully charged my battery from 14% to 100% 4 hours and my phone still charges very slow. I started charge his battery from 44%, at first it was charging very fast, but after 4hours it charged only to 88%. I rebooted phone and then it showed 100%. Where is the problem? My phones charges very slow with any battery. I don't want to reboot it every time to show 100%
Click to expand...
Click to collapse
What ROM do you have? Is it stock or other? I need about 2:30 to be filled in A1-7 4.3 ROM ... Have you tried the USB and what are the results? Maybe make some other rom, so if you do not work fast carge, change the charger and battery

Harbir said:
Change ur charger ( wire and adapter ) as I also faced that on by note 2(charger only 10% in 1 h) and when I changed by charger it started to charge like hell , then I realised that it was the charger fault(even if it original charger) and not phone
Sent from my HTC Sensation using Tapatalk 4
Click to expand...
Click to collapse
bobrda said:
What ROM do you have? Is it stock or other? I need about 2:30 to be filled in A1-7 4.3 ROM ... Have you tried the USB and what are the results? Maybe make some other rom, so if you do not work fast carge, change the charger and battery
Click to expand...
Click to collapse
I have brother's samsung charger and 2htc wires+adapters and there is no difference between them while charging. I have 4.0.3 android rom and it's rooted (has supersu app)

domukas00 said:
I have brother's samsung charger and 2htc wires+adapters and there is no difference between them while charging. I have 4.0.3 android rom and it's rooted (has supersu app)
Click to expand...
Click to collapse
Bro go to recovery and change from there see if it chargers well there (this is to see that is it a ROM problem ) say in recovery while charging
Sent from my HTC Sensation using Tapatalk 4

Maybe there is no recovery, so can not check ...
@ domukas00 go to this link and download 4kt recovery, and try what you suggested by Habiri
Try here http://forum.xda-developers.com/showthread.php?t=1377759

I got the same "problem" but only with custom roms, stock rom doesnt have this problem for me.
But after a reboot the battery shows its actual percentage.

Harbir said:
Bro go to recovery and change from there see if it chargers well there (this is to see that is it a ROM problem ) say in recovery while charging
Sent from my HTC Sensation using Tapatalk 4
Click to expand...
Click to collapse
bobrda said:
Maybe there is no recovery, so can not check ...
@ domukas00 go to this link and download 4kt recovery, and try what you suggested by Habiri
Try here http://forum.xda-developers.com/showthread.php?t=1377759
Click to expand...
Click to collapse
Okay, i have downloaded 4EXT recovery, now my battery is full, so i will try to check it in recovery tomorrow

Harbir said:
Bro go to recovery and change from there see if it chargers well there (this is to see that is it a ROM problem ) say in recovery while charging
Sent from my HTC Sensation using Tapatalk 4
Click to expand...
Click to collapse
bobrda said:
Maybe there is no recovery, so can not check ...
@ domukas00 go to this link and download 4kt recovery, and try what you suggested by Habiri
Try here http://forum.xda-developers.com/showthread.php?t=1377759
Click to expand...
Click to collapse
Today I turned 4EXT recovery when my battery had 60% at 4:21PM. After 2hours at 6:31PM it showed 82%, i thought that it's may be charging slow because screen is always turned on in 4EXT recovery, but still rebooted it. After reboot it showed 100%...

domukas00 said:
Today I turned 4EXT recovery when my battery had 60% at 4:21PM. After 2hours at 6:31PM it showed 82%, i thought that it's may be charging slow because screen is always turned on in 4EXT recovery, but still rebooted it. After reboot it showed 100%...
Click to expand...
Click to collapse
and I added about 10% when I reset the phone .. Try to get into recovery and wipe the Battery status.
Here they say that it takes about 2-3 charge that showed the true condition of the battery

bobrda said:
and I added about 10% when I reset the phone .. Try to get into recovery and wipe the Battery status.
Here they say that it takes about 2-3 charge that showed the true condition of the battery
Click to expand...
Click to collapse
It didn't helped. Today I got other HTC sensation phone, and it has same problem!!! After being charged from 60 to 72% in 1 hour I rebooted it and it showed 98%!! WTF!!! How it can happen?! At the moment I have 2 HTC sensation and they two have same problem! I can't believe it!!!! Never had similar problems with other phones...

domukas00 said:
It didn't helped. Today I got other HTC sensation phone, and it has same problem!!! After being charged from 60 to 72% in 1 hour I rebooted it and it showed 98%!! WTF!!! How it can happen?! At the moment I have 2 HTC sensation and they two have same problem! I can't believe it!!!! Never had similar problems with other phones...
Click to expand...
Click to collapse
In the end you still have a fully charged battery, it just do not show well while charging?
I read somewhere in albinomena tread to show that when the phone is fully charged, you need to leave for an hour on the charger.
I do not know this dayes my anker is really acting up strange, I can not get over 3h screen on time
Try to change the rom, mabey

domukas00 said:
It didn't helped. Today I got other HTC sensation phone, and it has same problem!!! After being charged from 60 to 72% in 1 hour I rebooted it and it showed 98%!! WTF!!! How it can happen?! At the moment I have 2 HTC sensation and they two have same problem! I can't believe it!!!! Never had similar problems with other phones...
Click to expand...
Click to collapse
Wiping battery stats won't help you.
Put your phone to charge overnight, discharge it completely. Do this for a few days.
Do not wipe battery stats, or you'll have to go all over again.
Happy to help.