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] Yet another battery drain problem

Hey guys,
When I first got my Desire I calibrated the battery after the first couple of days (when I found out how to do it), and since then it's been great. But in the last couple of weeks, it seems to get a bit lazy. So I thought I'd try and re-calibrate it.. Booted into recovery, wiped battery stats, did the process again (charge while on, turn off, charge again, etc) And now..well..I unplugged it at 6am and it's flat as a pancake now at 2pm..
My question is, there are so many different methods for calibrating, which would be the best one for me to use right now? It isn't turned on atm, and I don't want to charge it until I know what I'm doing. Hope someone can help me out

Maybe the problem is not your battery but a app or widget.
You say, after the calibration it was good.
Have you installed something new?
Edit:
The calibrate method I used is:
- charge full
- disconnect from cable and shutdown phone.
- charge till led is green
- disconnect from cable, start phone and shutdown phone
- charge till led is green
- Disconnect from cable - wipe battery stats
- Done

Yep that's the method I used.
Just done a complete wipe of everything and re-flashed InsertCoinHD2.0.0
Just gonna leave it with minimal apps, Facebook, eBay, etc for a couple days and see how that goes.

Looks like it hasn't worked
88% after 1 hour 27 mins
70% after 2 hours 40 mins
58% after 4 hours 8 mins
Sent from my HTC Desire using XDA App

Calibrating your batterie has only to be done once. If you flash a new rom, it's normal for the batterie to go that fast. You should wait a few days before everything is working as it should.
So your focus should be to find a clean rom, don't install any apps and just try it for a few days. After that you could also try messing with havs kernels.
88% after 1 hour 27 mins
70% after 2 hours 40 mins
Click to expand...
Click to collapse
I suppose this is with screen off? You should download current widget from the market and log your batterie usage. If the usage is around 5ma (lower = better) and still have a high batterie drain, then your batterie is damaged. But if the usage is higher then it's a software problem But then again, if you flash a new rom every few days it's normal to have high batterie drain.

Just tried it and wow 458mA! I might take my desire back to stock, original RUU and s-on and such.
Sent from my HTC Desire using XDA App

jimster4389 said:
Just tried it and wow 458mA! I might take my desire back to stock, original RUU and s-on and such.
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
That's normal if you have your screen on. You should enable the log function and leave your screen off for a few hours.

Thanks for that I've been flashing ROMs and such for a while now, but this is the first time I've had any problem with the battery.

Just a little update.
I figured it would be the kernel I was using (InsertCoinHD 2.0.0) as I'd heard a lot of people have the same trouble. Reflashed to v1.9.5 and the battery is going back to its old self, 61% left after 8 hours with moderate use, since reflashed 3 days ago Thanks to all who helped

An odd problem

Got a Desire Z, but the battery seems to go down too fast, even when not in use. Same thing when the phone is off also.
I get around 5-7 hours of the phone being on with about 15mins use and the battery is dead.
When the phone is off, I get about 8 hours.
I know its not the battery as I've tried a few. Ive also tried a few ROMs aswel as stock ROMs.
Any ideas on how I could fix this?
Thanks

dpgc213 said:
Got a Desire Z, but the battery seems to go down too fast, even when not in use. Same thing when the phone is off also.
I get around 5-7 hours of the phone being on with about 15mins use and the battery is dead.
When the phone is off, I get about 8 hours.
I know its not the battery as I've tried a few. Ive also tried a few ROMs aswel as stock ROMs.
Any ideas on how I could fix this?
Thanks
Click to expand...
Click to collapse
Every time you flash a new ROM you're wiping the battery stats and it takes the OS a few days to re-learn your battery. Wipe the stats manually and give it a few days.
Sent from my HTC Vision using XDA App

OriginalGabriel said:
Every time you flash a new ROM you're wiping the battery stats and it takes the OS a few days to re-learn your battery. Wipe the stats manually and give it a few days.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Ive been doing that.

dpgc213 said:
Ive been doing that.
Click to expand...
Click to collapse
Yea but how long do you wait before you end up reflashing or wiping again?

Around 3 days.

Have you checked to make sure you don't have some sort of errant app that's causing your battery to run down?

Bharakrama said:
Have you checked to make sure you don't have some sort of errant app that's causing your battery to run down?
Click to expand...
Click to collapse
x2 this happens a lot especially going from ROM to ROM. The built in function works ok, but I generally use Android booster to narrow down errant specific apps even built in Android apps like sync. It helped me go from 15 or so hours to 24+ especially if you use autostarts and TB to freeze or prevent from startup

3 ish days is probably not enough for Android to learn the battery levels properly. It takes a few charge cycles to get the values right. I wouldn't have thought its good to wipe battery stats constantly.
With the Touch Pro 2, you could force a learn by discharging it completely until it doesn't power on the firmware any more, pull the battery for a minute, charge overnight while powered off, pull the battery again for a minute then power on. This updates the values in the firmware too.
I have read it works with the Desire Z too, and I've tried it after a ROM flash just to wipe. Obviously, while you can still get into recovery, wipe battery stats prior to this.
Disclaimer: Do this once only, its very bad for Li-ion batteries to repeat this. Do this at your own risk.
If that don't work:
If it does it in airplane mode then its probably an app.
Make sure you flash something like a rooted stock ROM and make doubly sure you wipe everything before first boot. Data / Cache / Dalvic cache etc.
If you haven't installed any apps and it still does it, RMA the phone for repair / replacement.
Hope that helps!
Craig

Thanks for all the help above. Will try for a few more
Days.
Though the battery even dies when the phone is off.

Well, Ive still got the same problem. Ive realised aswel, when the battery dies and I go to charge it up the orange led flashes for around 5-10 minutes and then turns a solid orange.
Same thing happens with a replacement battery.
Im guessing its probably a hardware fault

dpgc213 said:
Well, Ive still got the same problem. Ive realised aswel, when the battery dies and I go to charge it up the orange led flashes for around 5-10 minutes and then turns a solid orange.
Same thing happens with a replacement battery.
Im guessing its probably a hardware fault
Click to expand...
Click to collapse
I've had the orange led flashing before after a completely flat battery. Its probably something to do with a dangerously low voltage from the battery. Its extremely bad for Li batteries to get very low..

Have no idea. Must be sg wrong with the HW, get it to a service station or ask for replacement where you have bought it. Mine goes for days. (bought in Austria, factory unlocked, Android 2.3.3)

Battery drains so fast

My battery seems to drain very fast.
The phone is brand new, and I'm not able of getting more than 12 hours with one charge.
I'm using lowest brightness possible, wifi ON only when needed, 3G on only when needed (The rest of the time it stands connected by EDGE, updating whatsapp and checking emails and twitts each 15 minutes), bluetooth off, gps off and autosync off.
When I'm sleeping it dischargues 3% per hour!
I have installeed juice defender, battery calibrator and battery graph.
Is this normal?
Any help?
Battery reaches 100% at 4,2V

Which Rom, kernel, etc do you use?
Sent from my HTC Desire using XDA

Thats not normal.
Maybe you should look for some apps installed, which dont let your phone fall into deep sleep....

Jeezer said:
Thats not normal.
Maybe you should look for some apps installed, which dont let your phone fall into deep sleep....
Click to expand...
Click to collapse
I had an app once called android assistance r something like that and it killed my battery. I went to bed and battery was at 94% and when i woke it was at 2%. Unistalled straight away lol. And like matdroid says, what rom u using coz sense roms aint battery friendly.
Sent from my HTC Desire

I have been testing with differents roms.
That test was done using stock 2.2 rom . Could it make that big difference?
Have installed leedroid, oxygen, sandvold 0.8 and CM7 RC2.. But haven't had time to test them properly. I hope the reason of this battery drain is the ROM .
The only program (I think) is running all the time is Whatsapp. And it works fine with EDGE. Twitter and emails are set to update each 15minutes thanks to JuiceDefender.

I`d recommend to try with a different battery, see if there is any difference.

U could also look into trying a different kernel, most roms these day come with a choice of a few kernels.
Sent from my HTC Desire

Here is the status of my battery.
Let me know if it's ok.
This was using Oxygen COS GB (17-04-2012 built)
It's in spanish (Pantalla) is screen and voz is voice.

Are you happy with that drain?

Obviusly I'm not happy. But what can I do? I have tried almost everything.
Please help.

Please post the time the display was on plus your brightness-setting.

Dear friends,
Here are the stats again,
This time it lasted more time because it included the time when I was sleeping.
See attached pictures.
The battery still drains fast.
Best regards.

I have also the same problem. Today it lasted for 8h.
I bought a new battery 2 weeks ago, so it can't be that. I've cleared battery stats with 4EXT Recovery and done also clean wipe when changed the rom to RSK 7.4.3.
Before that I had RevolutioN 4.0, but when i updated from 3.0 to 4.0, the battery problem started. I don't if it's just a coincidence. 3.0 worked perfectly, and it's a shame, that i haven't got this work ever since =7 "If it works, don't fix it"
On RSK, what i have now, i use snq kernel (installed the kernel on RSK installation).
//EDIT:
Oh yeah, and also done all the tweaking with Deamon Controller, like on the instructions what RSK wrote on first page.

My phone lasts 12 hour when I don't use massive data.
I tried different kernels and finally found that the ManU is the most battery friendly for me.
I don't use any optimization app, which I find quite useless, I just use two profiles in setcpu:
screen on: 1152 Mhz, governor performance
screen off: 422 Mhz, governor powersave
I prefer a more responsive phone than a longer battery life.

MatDrOiD said:
Please post the time the display was on plus your brightness-setting.
Click to expand...
Click to collapse
+1
Looks like your display is on all the time.

peikojose said:
Dear friends,
Here are the stats again,
This time it lasted more time because it included the time when I was sleeping.
See attached pictures.
The battery still drains fast.
Best regards.
Click to expand...
Click to collapse
First, try to turn of data connection when you're not using it.
Then try to do this:
-use your phone until you drain the battery
-turn of the phone and connect it to charger and leave it to charge 10-12 hours
-disconnect the charger, turn on the phone and use it until the battery falls down for a few percents
-turn it off again, reconnect to charger and leave it to charge for about an hour
-disconnect, boot into recovery and wipe battery stats
-turn the phone one and use it, you should notice the difference.
Sent from my HTC Desire using XDA

nlooooo said:
First, try to turn of data connection when you're not using it.
Then try to do this:
-use your phone until you drain the battery
-turn of the phone and connect it to charger and leave it to charge 10-12 hours
-disconnect the charger, turn on the phone and use it until the battery falls down for a few percents
-turn it off again, reconnect to charger and leave it to charge for about an hour
-disconnect, boot into recovery and wipe battery stats
-turn the phone one and use it, you should notice the difference.
Sent from my HTC Desire using XDA
Click to expand...
Click to collapse
Think again about the bolded part.

erklat said:
Think again about the bolded part.
Click to expand...
Click to collapse
I red that thread before and I know what you wanna say, but my point was first part with charging, not deleting battery stats. It just has some connection with the structure of Li-ion batteries. It is also recommended to completely discharge the battery and recharge it with the phone turned off once a month.

Thanks for your answers.
Screen is on a lot of time (in the screenshots I posted you can see).
But I use lowest brightness possible, between 10 and 20% when I'm indoors and only high values when the sun hits the screen.
pieru, can you post the ManU kernel link?
I don't know what kernel i'm using, i installed Oxyged cosed (I think last version) fropm roalex. How can I know?
Thanks nlooooo.

peikojose said:
How can I know?
Click to expand...
Click to collapse
Settings>about phone>software information.
I'm fairly certain it uses thalamus kernel tho. Oxygen doesn't work with any other afaik.
Sent from my HTC Desire using Tapatalk 2

Please open this!!

Hi, now that i have your attention!
I have cm7.2 democracy on my gio
I barely use it for wifi or gaming now because the battery is S**t.
I had 2.3.6 GB before and battery could take out 2 days on games and music. Now suddenly after switching to cm7.2 i need to charge it twice a day without using any app or game. just some texting like 10, 12.
I use ondemand governor and max freq is 806 min is 245
Also a couple of times i have seen that when my battery is at 30% and charge it then within 5-10 minutes it showed 100% charged. Unplug the charger.
Any suggestions or something on this? I really need an answer guys. Thanks

I can tell you that you can't charge your battery within 10 minutes.
Charge it at least 2 hours, 2.5.

RonninDAMN said:
I can tell you that you can't charge your battery within 10 minutes.
Charge it at least 2 hours, 2.5.
Click to expand...
Click to collapse
Yeah! I will. Even if it says fully charged. IDK whats the problem with it. It drains so quickly.
Even if i charge it 2 hours even then i have to charge it twice a day.

I have the same problems. Some help?

I am having the same happening with my phone. I am looking into buying a new battery.

My phone goes from 100% to 10% on five min plz help
Sent from my GT-S5660 using xda app-developers app

No one has found a solution 'till now?I'll try to use ODIN and go back to stock version, maybe that will help. Has anyone had those battery problems before using a custom ROM?with stock my battery used to last 2 days with games and music etc, now I can only use it for 5 hours without any games or music or internet. It also charges from 0 to 100% in 30 minutes , maybe less. I'm still hoping someone found a solution for this problem because it is useless to have a phone without any battery.

Try to get a new battery because huge draining problem is not caused by roms it caused by battery damage.my battery runs on stock rom over the 10days without using anything but on cm9/10 roms it drains faster but still runs more than 3days for me.

so no one got it?
Thank God I am not the only one here
But guys, I have been using stock GB for an year. Its been only a week on cm7.2 democracy and nightly.
Both have same battery issues and non of this happened in stock
It's not the battery issue.its something else. I'm sure

Have you tried going back to stock version using ODIN?I think that is the ultimate solution before sending my phone to service(I still have warranty).

midcoreboot said:
My phone goes from 100% to 10% on five min plz help
Sent from my GT-S5660 using xda app-developers app
Click to expand...
Click to collapse
Calibrate your battery.
Sent from my GT-S5660 using Tapatalk 2

asharx said:
I am having the same happening with my phone. I am looking into buying a new battery.
Click to expand...
Click to collapse
Try to "recalibrate" your battery; in cwm theres an option "wipe battery stats". some say its nonsense, some say it really helps; i would give it a try.
No idea if theres an option with stock roms, though.....

I'm calibrating now...Will post the result in a while. (Tomorrow i guess)

I still couldn't solve this..I flashed the stock firmware with ODIN and still no luck, I'm starting to think it is a hardware problem, maybe I will send the phone to service now that I have the stock firmware back. Has anyone found any solution?

Hey, i found this article
For the users who like to try out new ROMs very often or by default Android receives updates to Android very often. These updates re constantly pushed to the users to provide the better experience to the users. For those who flash their mobile handset with custom ROM they are advised to charge their handset to 100 % battery life and then proceed with the upgrade processor. That is advised because if you have 50 % of battery life and proceed with firmware update, the new custom ROM will consider 50 % battery life as the full battery stats and this will provide half the battery life then earlier as specified by your phone manufacturer. In those cases you need to go with the battery calibration to gain 100 % battery backup as specified by your provider. There is complete procedure on how you will calibrate your phone battery is mentioned by us and if you would like to make the process very much easier then you can make use of a specially designed application which calibrates your battery. (Battery Calibration)
Okay so i flashed a new custom rom with 100% battery but no luck on battery issue. Its still draining the same.
then i calibrated my battery with this app with my battery at 100% which of course is 50% as said by this article, the app said "Your battery has been calibrated by 6%". Don't know what that means.
ANY HELP? DEVELOPERS PLEASE GUYS!

Try to calibrate it too.It may fix it.

marius500 said:
Try to calibrate it too.It may fix it.
Click to expand...
Click to collapse
I said i calibrated it but still it charges quickly to 100% as it has no effect on the battery anyhow.

Buy New Battery
Problem solved :fingers-crossed:

I am getting the problem of battery drain only in cm7.2 democracy. On stock battery lasts for 2.5 days but on democracy only 1 day. What is the problem?? I dont wana leave this ROM its so nice. Can any body help me out.
I already calibrated my battery but no solution....

abdullahaftab said:
I am getting the problem of battery drain only in cm7.2 democracy. On stock battery lasts for 2.5 days but on democracy only 1 day. What is the problem?? I dont wana leave this ROM its so nice. Can any body help me out.
I already calibrated my battery but no solution....
Click to expand...
Click to collapse
I have the same issue, I am using CM10.1 RC0 by Olddroid but I think my problem is the charger. For the last month I charged my Gio using the usb connection from PC. Now, if I use the charger the battery drains faster than charging with the usb connection method. I am gonna buy a 1500 mAh battery and hope to solve this problem.