[HOW TO] Calibrate Desire Battery

[vidler]

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.

 

[jasonhuintl]

supportyou and the app!

Sent from my HTC Desire using XDA App

 

[desire888]

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

 

[b3ndik]

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

Also wondering about this

 

[Lennyuk]

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

 

[PStephan88]

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

 

[desire888]

thanks!!!!

battery usage is much better now!

 

[kmetek]

how do you wipe batt stats?

 

[siliconaddict]

how do you wipe batt stats?

Via ClockWorkMod recovery

 

[b3ndik]

how do you wipe batt stats?

Clockworkmod recovery -> advanced -> wipe battery stats.
Sent from my HTC Desire using XDA App

 

[pa.pn2]

do i have to repeat that in future again?

 

[nico1375]

You need to use this sequence only once.

first post

 

[Phily757]

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% )

 

[xNavyblue]

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

 

[BlackDragonBE]

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

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.

 

[xNavyblue]

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.

 

[Dany0]

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

 

[schidddy]

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??

 

[Dany0]

yes it is possible

 

[schidddy]

yes it is possible

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?