Develop Bugs

[HOW TO] Calibrate Desire Battery

Found this on another forum, I have done this a few times myself (do it whenever i flash a new rom because i always clear battery stats, can't hurt). Have found that it does top it up a fair bit. Before doing this i find my desire will drop to +-93% straight off the charger, however this keeps it 100% longer and i actually get to see the numbers 99-94%
Worth a go in my opinion because it only takes 5 mins of your time and can't hurt the phone... So any minor gain from this process is a win...
Hi *******, I understand your concern regarding battery life on your Nexus One device. The following steps should significantly extend the battery life on your phone. Please connect the phone to the charger with the phone powered on, and allow the phone to charge until the notification LED is green, indicating the device is fully charged. Disconnect the phone from the charger, and power it off. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the notification LED is green. Disconnect the phone from the charger and power it on. Once the phone is powered completely on, power it off again and reconnect it to the charger until the notification LED is green. Disconnect the phone, power it on, and use it. You need to use this sequence only once. If the issue of battery life on our phone persists, I recommend you contact our HTC accessory department directly.
Mod Edit: There have been a few reports of damaged batteries by people on this thread. There is a chance that this MAY damage your battery. Please bear this in mind if you choose to follow the instructions above.

supportyou and the app!
Sent from my HTC Desire using XDA App

Thanks for that. At what point do you wipe battery stats? After the process is complete?

desire888 said:
Thanks for that. At what point do you wipe battery stats? After the process is complete?
Click to expand...
Click to collapse
Also wondering about this

You should wipe battery stats after its fully green (when powered off) then boot the phone back up.
You only need to do this once
I.e.
Charge till full when powered on
power off
charge till full again
boot into recovery wipe stats
boot and continue to use as normal

It works!!!
That's fantastic!
I read this topic this morning and tried immediately. Since this morning i only lost 4% until now. That's great news!
Thx a lot, man!
Sent from my HTC Desire using XDA App

thanks!!!!
battery usage is much better now!

how do you wipe batt stats?

kmetek said:
how do you wipe batt stats?
Click to expand...
Click to collapse
Via ClockWorkMod recovery

kmetek said:
how do you wipe batt stats?
Click to expand...
Click to collapse
Clockworkmod recovery -> advanced -> wipe battery stats.
Sent from my HTC Desire using XDA App

do i have to repeat that in future again?

vidler said:
You need to use this sequence only once.
Click to expand...
Click to collapse
first post

takes a long time to charge my Desire, but then i'll test this one!
Hope this will make battery life better. I have the same problem as described in first post (drops immediatly from 99% down to 93% )

Can someone suggest me how should I go about doing this if I use multiple batteries?
I'd imagine the phone can only be calibrated to 1 battery. But if I were to use another battery, would I screw up the calibration to the original batteries?
Right now as it is with moderate usage I need 3 batteries to last me through the day. :S

xNavyblue said:
Can someone suggest me how should I go about doing this if I use multiple batteries?
I'd imagine the phone can only be calibrated to 1 battery. But if I were to use another battery, would I screw up the calibration to the original batteries?
Right now as it is with moderate usage I need 3 batteries to last me through the day. :S
Click to expand...
Click to collapse
3 batteries?!
What rom are you using and how exactly are you using your phone?
I have just one battery and it lasts about 2 days with moderate use.

I am using this ROM: (sorry can't post link)
[ROM] Rooted Official HTC Android 2.2 (FroYo) ROM [Market issue fixed]
With my typical usage, I unplugged the phone in the morning from the charger, by the time I knock off from work, I would have left about may be 20%. With stock ROM and a single battery, there is no way that I could last 2 days with one single charge. My main use is web browsing, RSS, Facebook and IM. My estimation of my solid screen time is about 2-3 hours.
So I bought more battery just in case, and played with custom ROMs. I ended up using up a whole battery in 4 hours or so. Definitely something is wrong here. My gut feel is that both the ROM and batteries are suspects. Being a newbie I really need enlightenment.

Is it really needed to wipe the stats? I think I've accidently done this once already... cause the battery life is much better.

since this procedure, my battery stays at 100% since nearly 2 and a half hours now and i did 2 text messeges in between and recently checked the bat about 4 times
this couldnt be possible..
i mean the battery is almost doubled in comparison to how long it lasts before
is this possible??

yes it is possible

Dany0 said:
yes it is possible
Click to expand...
Click to collapse
but how?
i mean in this time the battery would have been dropped to arround 97
and now its still full?
i mean these are stats how are they increasing battery life? the batterylife is given from the cell itself?

[Q] HTC One X battery life issues, first charge problem or.....?

Hey guys, I just got my HTC One X a few days ago and this is my third day running on this phone.
I wonder if giving it a first charge for 8 hours was needed to condition the battery and giving it as much battery life as possible.. Because when I first received the set, the set was without juice. So I charged it up till about 15% and I received a notification about an FOTA update and I went ahead with it.
After the phone reached slightly over 35%, I let the phone install the FOTA(while still at it's first charge) and it hanged halfway.
I didn't know what was happening so I tried rebooting the device(as removing the battery wasn't possible with the One X). After several tries of holding down the power buttons, I removed the microUSB cable attached to my phone and the phone went blank and it restarted by itself.. Take note that the battery was only at ~30% at that point of time..
And one thing I noticed when the phone didn't respond during the FOTA update was that the AC plug was not as hot as it was used to when charging.. Yeap, so does anyone know if I have actually 'damaged' the battery or maybe it's just the handset that's power hungry? Thanks!
PS, Thank you for taking your time to read this long wall of text and taking your time to reply to my query!

I'm not too sure what the problem is now. Is it about the power draw, or did you brick your phone and wondering if it was caused by a damage battery on your side?

ArmedandDangerous said:
I'm not too sure what the problem is now. Is it about the power draw, or did you brick your phone and wondering if it was caused by a damage battery on your side?
Click to expand...
Click to collapse
Well, I'm just wondering if me not giving a proper 'first charge' has anything to do with it's poor battery life or it's just natural for the device to be this power hungry, haha.

id0n0van said:
Well, I'm just wondering if me not giving a proper 'first charge' has anything to do with it's poor battery life or it's just natural for the device to be this power hungry, haha.
Click to expand...
Click to collapse
How much screen on time ate you getting?

You shouldn't charge while flashing the OTA.
I don't think you did any harm.

farnsbarns said:
How much screen on time ate you getting?
Click to expand...
Click to collapse
I haven't been able to get any numbers yet because these few days I've been running the phone mostly plugged into the wall socket. Yeah.

I only had a two hour battery life after the first complete discharge and 8 hour recharge.

id0n0van said:
Well, I'm just wondering if me not giving a proper 'first charge' has anything to do with it's poor battery life or it's just natural for the device to be this power hungry, haha.
Click to expand...
Click to collapse
Assuming your FOTA Succeed,
Try...
1. disable fast-boot (Settings > Power > Untick fastboot)
2. Power Off
3. Charge (until green / 100%)
4. Power On
5. enable back fast-boot
6. Hopefully you got real battery-stats already

I've noticed some improvement of the battery life of my phone after flashing it with a custom rom.
With a giant screen, a powerful processor, and an elegant packaging, pour battery life is kind of expected, for me I've put chargers almost in every corner of my home, at work, and in my car.
Sent from my HTC One X using XDA

I normally get about 3.5 hours ++ screen time on a full charge, auto brightness.

I am getting 5 hours of on screen time on my stock Rom. Is that possible to get more screen time like 9 hours on custom Rom ?
Sent from my HTC One X using Tapatalk 2

I didnt charge it when I first got it either. I booted it instantly and used it untill the battery was completety drained and the phone shut down untill I recharged it completely and my battery life is horrible. The worst of any HTC one x so I wonder if I might have damaged the phone aswel??

forumhookersdotcom said:
I am getting 5 hours of on screen time on my stock Rom. Is that possible to get more screen time like 9 hours on custom Rom ?
Sent from my HTC One X using Tapatalk 2
Click to expand...
Click to collapse
No.
okini said:
I didnt charge it when I first got it either. I booted it instantly and used it untill the battery was completety drained and the phone shut down untill I recharged it completely and my battery life is horrible. The worst of any HTC one x so I wonder if I might have damaged the phone aswel??
Click to expand...
Click to collapse
Charging it when you first get it does nothing. If you have such bad battery life it is probably a faulty phone.
Sent from my HTC One X using xda premium

When I first got mine I ran it till it died then did a full charge so that shouldn't matter at all.
Sent from my HTC One X using xda premium

My battery was ok on 1.26 then updated to 1.28 and it went beyond awful but after about a week of use on 1.28 my battery has improved a lot... Bought an external charger while was waiting on next update but before I received the charger battery went boss !! So my guess is give it a few days and don't be inpatient with it as it will come around
Sent from my HTC One X using xda premium

I'm having issues with my battery life. I'm also new to the Android platform -- well sort of, I've used CM9 on my HP Touchpad for a while now, but this is my first Android handset. I've had the phone for almost a week now, and I've noticed that I barely get around 9 hours of moderate use per charge. On average my on screen time is about 3.5 to 4 hours. That is terrible. My iPhone 4 is lasting twice as long as my HOX and I've had that thing for about 2 years now. Any tips on improving battery life?

Only charging to ~65%

Hi,
i usually charge my One X over night with the original HTC charger.
I use a custom ROM (Charmeleon) but experienced this also on stock a couple of weeks ago.
Sometimes i wake up, unplug the phone and it's kind of hot and only charged to about 65% although it was plugged about 8 hours.
This night it happened the second time in a row.
Has anyone the same issue?
Thanks
Regards
Daniel

You need to reset the battery stats, though I'm not sure how to do it on a HOX; I'm still unrooted, locked.
Usually it's through recovery. Basically since you flashed the rom at (possibly) not full battery it thinks the battery is full at 65% on the new rom.
Sent from my HTC One X using xda premium

No, that's not the problem because i use this ROM for a week now and it charged without a problem the other days. And as i mentioned, i also got this on stock one time...

Since you're rooted and unlocked it wouldn't hurt to wipe the stats again. Charge it full, turn it off and charge it for 10 minutes, turn it on in recovery and wipe stats. Then let it die completely and charge it full. Should be fine.
Sent from my HTC One X using xda premium

I highly doubt it just isn't charging.. Maybe restart it before you sleep? If you possibly have a ton of background stuff running? I can imagine it wouldn't charge due to that though. It could also be a deeper problem that might need a full wipe and re flash...
Sent from my HTC One X using xda premium

Hmm the last two charges were fine. Very suspicious... :-/

There may have been a connection problem with the cables, happened to my brother when he didn't use the factory charger.
Sent from my HTC One X using xda premium

And it happened again....
I use the original htc Desire hd charger with a Kindle USB cable.
But if thats really the Problem, why does it work Most of the time?
Sent from my HTC One X using XDA

BTW i wiped battery stats before.
I think i will wait for the next Charmeleon Version to come and wipe completely then.
Sent from my HTC One X using XDA

Dacoco said:
BTW i wiped battery stats before.
I think i will wait for the next Charmeleon Version to come and wipe completely then.
Sent from my HTC One X using XDA
Click to expand...
Click to collapse
Yeah, do that.. But a third party usb extender caused his problem. Weird, I thought. It wouldn't even charge enough to get past a black screen, it scared me I thought it was bricked. A little adjustment of the connection fixed it but needless to say we don't use that cable anymore.
Sent from my HTC One XL using xda premium.

Now i got the same issue with the original cable. I charged it at work after it charged only to ~67% over night and suddenly the notification led started flashing orange and green and the phone got very hot.

I'd definitely return it to the retailer its clearly hardware..
Sent from my HTC One XL using xda premium.

Try battery calibration app from the play store, i used this to sort out a similar problem on my old desire.

anoniemouse said:
Try battery calibration app from the play store, i used this to sort out a similar problem on my old desire.
Click to expand...
Click to collapse
This app deletes the same battery stats which have been mentioned above, its just an easy way to do it.
Sent from my HTC One XL using xda premium.

Has anything changed on Android 4 about the battery stats? I cleared them the first time after i installed a custom rom.
Before my One X has charged about 70 times without any problems (just 1 time i got this error). After i installed the custom rom and cleared battery stats (via "Battery Calibration" from play store) i got this issue more and more.

jphilippon said:
This app deletes the same battery stats which have been mentioned above, its just an easy way to do it.
Sent from my HTC One XL using xda premium.
Click to expand...
Click to collapse
I am all for the easy way.

I have the same problem with my HOX. From what I noticed this happens only if the device is really hot. As soon the temperature goes down it starts charging again. From what i've read on google, it has some settings from stopping it from charging on high temperature because the Li-Po battery can explode much more easier then the Li-On one.

I installed ARHD 7.1.0 this morning had 90% battery after installing, thought id top it up to full when i checked 15mins later it was still at 90%. Rebooted into recovery deleted battery stats and started charging all good.

Dacoco said:
Now i got the same issue with the original cable. I charged it at work after it charged only to ~67% over night and suddenly the notification led started flashing orange and green and the phone got very hot.
Click to expand...
Click to collapse
You have a very badly made app working in background, eating the battery, heating up the cpu, this could be related to modified unstable ROM. Forget about battery calibration, android does that automatically for 1 reason only - to show you the most appropriate percentage when you use the battery itself, it has nothing to do with your problem.

I'm one step closer - i maybe found the cause, but not the solution.
I installed Current Widget yesterday and enabled logging. At midnight i connected my One X to the factory charger and went to bed.
At 7:00 the phone was really hot, Battery indicator showed 58°C and the battery was at about 70%.
I checked the Current Widget immedeately and found out that the phone charges to 100%!!
0:00 5%, Plugged in
2:54 100%, Fully charged
3:44 100% Charging state, kept until now
4:40 69%, Until now constantly losing charging state
4:41 70%, Seems to charge again
4:56 69%, Charging seems not to work
5:20 71%, Charging again a little
7:00 71%, Just kept the state and changing between 69 and 71%
7:01 71%, Plugged out
The "jobs" that run over night are:
02:00 Sms Backup and Restore
03:00 Titanium Backup - Backup all User Apps and Data
04:00 Whatsapp Autobackup
How can i find out what is the problem / Causes the drain?
The phone is in airplane mode the whole night.

[Q] Battery Issue

So here's my problem:
About few weeks ago, my battery started to fooling with me. When I use it for Facebook, Twitter and normal web surfing, the battery goes down, fast, from 100% to 10% took only about one hour plus. Then I left it aside. Check it again after 30 minutes, the battery went up to 27%. So I think battery was miscalibrated so I tried to calibrate the battery using all the guides I can find on the net for weeks but none worked.
So what should I do? Should I change a new battery?

Did u try calibrate it properly, eg.. wait till its charged fully then wipe them. using an app from playstore is the best way. If u wipe stats when its not charged100% then it will start jumping percentages.
Sent from my GT-I9300 On Official JB

Standard batteries are terrible anyway. I couldn't do without my 3600mah one now.
As wedgess said, get an app for calibration. I use 'battery calibration' (simple enough) which works perfectly for me
Sent from my R800i using xda app-developers app

wedgess said:
Did u try calibrate it properly, eg.. wait till its charged fully then wipe them. using an app from playstore is the best way. If u wipe stats when its not charged100% then it will start jumping percentages.
Sent from my GT-I9300 On Official JB
Click to expand...
Click to collapse
Yeah I waited till 100% then I wipe the stats but still the same.
BensJammin said:
Standard batteries are terrible anyway. I couldn't do without my 3600mah one now.
As wedgess said, get an app for calibration. I use 'battery calibration' (simple enough) which works perfectly for me
Sent from my R800i using xda app-developers app
Click to expand...
Click to collapse
I don't plan to get new battery yet if my battery can be saved.

here you go
jeff7424 said:
So here's my problem:
About few weeks ago, my battery started to fooling with me. When I use it for Facebook, Twitter and normal web surfing, the battery goes down, fast, from 100% to 10% took only about one hour plus. Then I left it aside. Check it again after 30 minutes, the battery went up to 27%. So I think battery was miscalibrated so I tried to calibrate the battery using all the guides I can find on the net for weeks but none worked.
So what should I do? Should I change a new battery?
Click to expand...
Click to collapse
PROBLEM SOLVED... this works with all xperia play models and it fits with the back cover that comes with the phone...O and it comes with the instruction on how to change the battery build prop.
http://www.mugen-power-batteries.co...xperia-x1-1800mah-extra-eros-akkumulator.html

Which means I'll need to get a new battery? No other way to save it?

Well try to underclock it and make the screen brightness lowest. Try to look at the battery stats too as you may have an app which is using a lot of resources of your phone. If you can live without your phone then switch it off completely, try to find the charger with highest mAh output (the higher the mAh output is the quicker it is charging), connect your turned off phone to the charger, make sure it's charging, leave it for 2 days charging like this and then disconnect it, boot it straight to the recovery, wipe the battery stats from recovery. If this is not going to help then I seriously have no idea what else you can do.
Sent from my R800i using xda app-developers app

olokos said:
Well try to underclock it and make the screen brightness lowest. Try to look at the battery stats too as you may have an app which is using a lot of resources of your phone. If you can live without your phone then switch it off completely, try to find the charger with highest mAh output (the higher the mAh output is the quicker it is charging), connect your turned off phone to the charger, make sure it's charging, leave it for 2 days charging like this and then disconnect it, boot it straight to the recovery, wipe the battery stats from recovery. If this is not going to help then I seriously have no idea what else you can do.
Sent from my R800i using xda app-developers app
Click to expand...
Click to collapse
Phone's not overclocked, brightness is always low, I used it for texting my gf for whole day, played word search for a while and my phone left 50%, no data no WiFi nothing, When I turned on WiFi and keep using it, battery drops fast. Reached 4% I left it, went back to 16%, continue using, left 4 % again, left it again went back to 10%, then I used it till 4% again, now left 6%. Using stock charger but with different cable since my stock cable is broken. Is that related? If yes I'm going to get a new charger.

jeff7424 said:
Phone's not overclocked, brightness is always low, I used it for texting my gf for whole day, played word search for a while and my phone left 50%, no data no WiFi nothing, When I turned on WiFi and keep using it, battery drops fast. Reached 4% I left it, went back to 16%, continue using, left 4 % again, left it again went back to 10%, then I used it till 4% again, now left 6%. Using stock charger but with different cable since my stock cable is broken. Is that related? If yes I'm going to get a new charger.
Click to expand...
Click to collapse
Your best jut getting a new battery by the sounds of it I had a similar problem buy just got a new battery and it fixed it
Sent from my R800i using xda app-developers app

ILikeTheWayYouMove2 said:
Your best jut getting a new battery by the sounds of it I had a similar problem buy just got a new battery and it fixed it
Sent from my R800i using xda app-developers app
Click to expand...
Click to collapse
Sigh okay. Thanks everyone.

Odp: [Q] Battery Issue
Any news?
Sent from my R800i using xda app-developers app

[Q] Is it bad to keep One V connected to charger

I don't want to go too much offtopic in the PACman ROM topic as my questions have no more nothing to do with ROMs, so I make a new topic, maybe too asked, but with One V, is it safe to keep it plugged to charger all night, I mean does it make any bad things like ruin battery or something, no I am not talking about overcharge, but still should it be good, or is it bad to keep the phone plugged to charger all night so it would be ready at 100% on morning. I did read that batteries dont actually charge 100%, said it charges usually about 90-95% and that is why the first 10% will drain faster as it really is 90% instead of 100%. Is this the thing what happens with One V too, so can i keep it plugged in charger? Does it make battery life worse?

leaving your One V charging overnight IS Overcharging...
So... no, it's not a good idea to leave it charging overnight...

Everybody says its not the good way to charge the mobile over entire night. Haa haa from 6 years I do keep charging my cell over entire night. It doesn't make any difference to me.
Sent from my One V using Tapatalk 2

I still am doing this and i think it it doesnt overcharge, but i am wondering does it make battery life worse as someone said so. If not, i guess i will continue my current way to charge, but i do know it doesnt overcharge. The thing i want to know is does it make battery life worse.
Sent from my HTC One V using xda app-developers app

No,nothing gets worse

yes it does..
my friend has a galaxy note and he used tp keep it overnight for charging and his battery got swollen soo its better to not take a risk.. unless ur a rich **** and willing to shell out
Sent from my One V

paarthdesai said:
yes it does..
my friend has a galaxy note and he used tp keep it overnight for charging and his battery got swollen soo its better to not take a risk.. unless ur a rich **** and willing to shell out
Sent from my One V
Click to expand...
Click to collapse
I agree. It's not good to overcharge
Sent from my One V using xda app-developers app

Now, what I found was:
"HTC One V - battery charging questions
Should be fine, the batteries use Lithium cells and have pretty good built in overcharge/run down prevention. They are designed to be left on the charge overnight and collected in the morning. They will charge rapidly over the first 1-2.4 hours (assuming a 3hr charge cycle) then slow down. Eventually it will just bounce off 100/99% as it charges/discharges." - from HTC...
"This "smart charger" is built into the phone. It slows down when it gets near capacity. In fact I think even the LED light goes green to indicate it's full at around 95% if I remember rightly (I read it on XDA."
"Advanced state-of-the-art internal circuitry protects the HTC One V from power surges, overcharging, and short-circuiting, to significantly extend the internal battery lifecycle."
"Is it OK to leave my battery plugged in, even if it is fully charged?
Yes, it won't hurt it as long as the battery doesn't overheat.
Source: http://www.batteryuniversity.com/partone-14A.htm
Should I remove the battery from the charger when full?
It does not matter. The charger automatically cuts the charge current when the battery is full."
So, after all that, whom to believe?

sooo after all experience is to believe and your surrounding persons and their experiences.. I've got my friend's note's battery swollen soo i wouldn't take a risk.. after all its your choice
Sent from my One V

Honestly I've owned a galaxy vibrant, Huawei ideos, vs2, optimus v, and this one v and I've charged all over night and none have suffered battery life issues. In my opinion no not a big deal lol
Sent from my HTC One V using xda premium

why would you need to charge overnight? are u on stock? in that case you might as well leave it overnight to charge......FYI my One V takes only 90 mins to go from 10 to a 100%

Sabbit said:
why would you need to charge overnight? are u on stock? in that case you might as well leave it overnight to charge......FYI my One V takes only 90 mins to go from 10 to a 100%
Click to expand...
Click to collapse
I need full battery as in my usage it goes quite fast empty. I use PACman ROM, not stock.
Sent from my HTC One V using xda app-developers app

Sabbit said:
why would you need to charge overnight? are u on stock? in that case you might as well leave it overnight to charge......FYI my One V takes only 90 mins to go from 10 to a 100%
Click to expand...
Click to collapse
Well to wake up to a fully charged phone. I always charge over night usually my battery is drained by the end of the night
sent from my Samsung galaxy s 3 running Jellybean 4.2.1