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] Defy looses 10% battery in just a minute even charged 100%

I disconnected my defy from charger just now as it showed 100% charged but as soon as I disxonnected charger 10% battery is lost without doing anything that too within a minute
Pls help people

Did you try to wipe battery stats.
Sent from my Desire HD using XDA App

What ROM are you ON?

stock rom
pprakash said:
What ROM are you ON?
Click to expand...
Click to collapse
Stock 2.2.2

hey!
hey guys! i'm having the same problem but with ms2ginger 2.0 defy/+ rom
the stock rom i get about a days battery backup but with these roms it just drains and i'm out within half a day!
wiped battery stats and have done a caliberation as well so if i've msised out on anything else then please let me know!

asn39 said:
I disconnected my defy from charger just now as it showed 100% charged but as soon as I disxonnected charger 10% battery is lost without doing anything that too within a minute
Pls help people
Click to expand...
Click to collapse
This is simply because as soon as you unplug your phone, it uses power. Therefore, with 10% battery step, it will say it drops 10%, even though it is actually at 99%. My phone did this as well til I flashed a 1% battery step fix.
If your phone drops to 80% within a few minutes of unplugging it, you have a problem. Hope this was helpful.
Sent by my CMIUI Defy from another universe

sUpErwHoO said:
hey guys! i'm having the same problem but with ms2ginger 2.0 defy/+ rom
the stock rom i get about a days battery backup but with these roms it just drains and i'm out within half a day!
wiped battery stats and have done a caliberation as well so if i've msised out on anything else then please let me know!
Click to expand...
Click to collapse
What do you have running during the day? What ROM did flash Ms2ginger over? I've had issues like that before. I would just start fresh, clean sbf flash, root, recovery, etc. Always fixed any battery issues that couldn't be fixed by wipe/calibration. Clean installs of applications (not restoring data), can also help.
Sent by my CMIUI Defy from another universe

Angelus47 said:
What do you have running during the day? What ROM did flash Ms2ginger over? I've had issues like that before. I would just start fresh, clean sbf flash, root, recovery, etc. Always fixed any battery issues that couldn't be fixed by wipe/calibration. Clean installs of applications (not restoring data), can also help.
Sent by my CMIUI Defy from another universe
Click to expand...
Click to collapse
well i started at fro yo(once) and re flashed from either ms2/that Chinese Moto 2.3.4, and during the day its usually background apps but its drained by the end of the day, almost down to 25% so don't even have the mood to play anything!
um i'd send out a few messages recieve a few calls over the day, and on a happy day a game or two for about 20 minutes! lol
i'm flashing cm7 just to see if theres a battery problem!
ps, i know this is off topic but is there anyway to change
a:the boot image (cm7)
b:the notification drop down (cm7)
ty
Edit:
The notification thingy can be hidden in cm7 it took me all of 3 hours to figure it out after playing around with it!

Angelus47 said:
This is simply because as soon as you unplug your phone, it uses power. Therefore, with 10% battery step, it will say it drops 10%, even though it is actually at 99%. My phone did this as well til I flashed a 1% battery step fix.
If your phone drops to 80% within a few minutes of unplugging it, you have a problem. Hope this was helpful.
Sent by my CMIUI Defy from another universe
Click to expand...
Click to collapse
+1. Also with stock Froyo my Defy was loosing 2% every hour. After I moved to Defy+ rom by Walter79 the drop have gone down to 0.5% every hour. You can also try System Tuner and see if any process is having high CPU utilization and also check if your phone enters Sleep state or not.

asn39 said:
I disconnected my defy from charger just now as it showed 100% charged but as soon as I disxonnected charger 10% battery is lost without doing anything that too within a minute
Pls help people
Click to expand...
Click to collapse
use battery monitor widget off the market

issue solved
MrBelter said:
use battery monitor widget off the market
Click to expand...
Click to collapse
Issue solved using dr. Battery saver full cycle charge working great

I too am having issues with battery life since the day I bought the defy. The original battery was giving me 1 day max with all gps/wifi/data switched off and 1 hour talktime. After making few rounds of the service centre had it replaced, but even the new battery is no better. With the new battery now I am able to get 2 days max with all data/wifi/gps off, and 1-2 hours of talk time.
Did the battery stat wipe too but no better.
Any better ideas?

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

Low precantages of battery last much longer (without power saver)

I've searched the internet for that problem and found nothing so I'm trying my luck here.
My battery precantages is not linear at all.
When I'm discharging the phone from 100% to 0% the precantages drop really quickly until 5%-9% (Disabled battery saver when cross 15% of course) and then the precatnges seems to stop draining and every precantage last longer and longer until it gets to 0%.
From 100% to 0% I've got 2:45 screen time in my last test but between 100% to 5% it was only 2:15 screen time!
Meaning that every precent lower than 5% last 6 mins vs. every precent above 5% last 1.35 mins.
It's very annoying and happened to me also on unrooted ICS and then on unrooted JB and also on every rom-kernel combination I ever tried after I rooted my phone. (ARHD, OrDroid, Maximus, CM10.1, Renovate + NCX, XM, Komzik and stock of course).
Do you think its a hardware issue? Do I need to replace the battery? Or it's a common problem of HTC One X?

It's not a problem, it's a feature.
Why does it irritate you?
Sent from my IceCold One X

TToivanen said:
It's not a problem, it's a feature.
Why does it irritate you?
Sent from my IceCold One X
Click to expand...
Click to collapse
How's that a feature if power saver is off? Don't get the idea. I prefer that every precent will be equal. It decreases screen time alot if you don't reach the last precents. By half an hour! That's absurd.
Every precent can be 1.65 mins of screen time and by the time I will reach 10% I will have 2:28 screen time instead of just 2:10.
If it's really a feature so it's a bad one, How I can disable it?

If you have recovery installed try to wipe battery stats. then do a full discharge then full charge with out using it. Worked for me. had a similiar problem once

Dizy801 said:
If you have recovery installed try to wipe battery stats. then do a full discharge then full charge with out using it. Worked for me. had a similiar problem once
Click to expand...
Click to collapse
TWRP doesn't have a battery stat wipe option.
There is another way to do that without installing another recovery?

tal_sarid said:
TWRP doesn't have a battery stat wipe option.
There is another way to do that without installing another recovery?
Click to expand...
Click to collapse
The file is deleted when the phone is charged.
The file has nothing to do with the displayed battery percentage remaining.
Deleting the file manually is a pointless thing to do.

BenPope said:
The file is deleted when the phone is charged.
The file has nothing to do with the displayed battery percentage remaining.
Deleting the file manually is a pointless thing to do.
Click to expand...
Click to collapse
So if it has nothing to do with my problem what does? I already installed various of roms with various of kernels and the problem persists. I have already full wiped everthing for too many times. Maybe it is an hardware fault of the battery indicator or somthing like that?

A ROM or kernel won't change it, the battery itself indicates what's remaining. I guess the lookup table or whatever is not well calibrated for the cells in your battery.
Get over it, it's not a big deal, you can't fix it other than replacing the battery, but that's not guaranteed.

To me, any HTC One X that lasts about 6 hours with 3 hours of maximum screen time has a hardware issue.
I have similar problem ever since I bought the phone last May.
Just by looking at http://forum.xda-developers.com/showthread.php?t=2156311 makes me wonder what the hell is wrong with the phone itself.

limzm said:
To me, any HTC One X that lasts about 6 hours with 3 hours of maximum screen time has a hardware issue.
I have similar problem ever since I bought the phone last May.
Just by looking at http://forum.xda-developers.com/showthread.php?t=2156311 makes me wonder what the hell is wrong with the phone itself.
Click to expand...
Click to collapse
So most of the One X's that I know are borken. I know 6 people that never pass 3hr screen time with their phone. and in XDA I see 7hr screen time and can't believe it, even if I turn off all the sensors like GPS, Bluetooth when not needed it's not helping me to pass the 3hr...

tal_sarid said:
So most of the One X's that I know are borken. I know 6 people that never pass 3hr screen time with their phone. and in XDA I see 7hr screen time and can't believe it, even if I turn off all the sensors like GPS, Bluetooth when not needed it's not helping me to pass the 3hr...
Click to expand...
Click to collapse
Yup! Turning off all sensors, GPS, data doesn't help.
When one turn off the screen at eg. 70% then turning back the screen on after an hour of sleep time, it will drop to 65% or worse. Always made me mad when that happens.
Even any battery saving guides like getting rid of wakelocks doesn't help.

I usually get 5 hr screen time but depends a lot on what you do. 3G data drains battery faster than WiFi, GPS doesn't drain battery unless an app uses it, etc.