yashsingh1/xdaforums huggingface dataset:
[Desire General] tekomie:
@SiliconAddict

@siliconAddict: Thanks for the response. I will do EXACTLY what you recommend here...for clarification purposes( I'm a stickler for concise instruction... Instructional Designer by day..:) ) when you say "DO NOT INSTALL Additional Apps" are you pretty much saying not to allow google to resync(auto restore) All MY APPS from the market And/or proactively restore All MY APPs using Titanium Backup?

if that's the case..it would make sense...so therefore what I'll do is turn off all google restores/appbrain/titanium backups(restores) until AFTER I recalibrate my phone...Correct?

You also informed me it was ok to reinstall at least Overcharger..is that correct as well.?..guess ill need that to ensure im charging over 1480 mV...

Let me know...Thank you kindly BTW....you are the man!
[Desire General] siliconaddict:
If your battery life is fine don't fiddle with it. Don't fix it if it ain't broken, remember ;)
[Desire General] sonicdevil:
Hi i am new to android and own a htc desire wid da factory rom

N my cell drain da battery veryfast . I tried the method suggested in dis post . But i din c any results

I have done the following setps .

I charged the cell till the led indicator turned green .

Switched off the cell . Charged again till the led turned green .

Switched on the cell

Switched it off and den charged it till led turned green again .

Can ne1 pls tell me where i went wrong ?

N my htc is on android 2.1
[Desire General] Sandvold:
Just wanted to sat thx to the ones coming upp with this fix. I had terrible battery life (had to charge twice a day) the last turer days i've had about 35%left after a 16h day.i'm a heavy user. Wifi +3g always on + sync every 15min. Phone calls on 3h a day as well.

I would recommend those who håve batt issue to find a app that monitor cpu use. I found two big battery drains which really depleted my battery
[Desire General] mi3x:
Please bear in mind that Desire is a smartphone and can do pretty much the same as a usual laptop, with a way greater battery life, and that every app that sync or polls drains your battery so do not expect miracles if you have alot of apps running, syncing etc.

I strongly suggest to follow silliconaddict's method, it really IMPROVES batt life.

Kudos to you my friend for your detailed tutorial.

I had almost 42 hours of use without recharge, with friends syncing (FB, Twitter) and Trillian in the background all the time, Newsroom checked every 6 hours or so, soccer pro every now and then, that is, in my opinion, AWESOME!

I'm a student, but will donate a couple of beers at the beginning of the month! :D
[Desire General] siliconaddict:
It's a method I have been using since my 1st WinMo device, an iPaq 3630 more than 10 years ago. I have finetuned it over the years, and it simply works. Period.

Maybe draining the battery untill the device shuts itself off too often wears out the battery slowly (which I haven't noticed yet BTW) but batteries are quite cheap, so buy a new one if it's worn out after a year or so. Or maybe it's time then to replace your Desire with the latest greatest quad core 10Gig RAM 3D device ;)
[Desire General] tekomie:
@siliconaddict

Alas i performed the recalibration per your specified procedures (stated above)...I will say that theoretically it makes sense. However... in my case..immediate battery drain again..I know for a fact that this method works... your absolutely right about that..maybe ive calibrated too many times in one week.. OR did not let the battery cycle (100--->1%) then recharge, enough times..what do you think?

at this point im letting it go (stopped the calibration procedures) and cycling the battery a few times (5+) before trying the method again.

I will say that I have implemented the Collins_ph battery tweak that decad3nce ported to the Eris ( i realize this is a Desire thread... and thank you for helping me regardless of this) with the CFS Kernel that Decad3nce and Conap cooked up,and this calibration method,I thought i would get better battery life...not the case really...

If i dont use the device...say let it sit...battery drops, but will last a good while... so something is working... its when i actively USE the device, the battery drains before my eyes... I recently fully charged...and not 30min have passed.. and currently down to 93%....Ill figure it out eventually...

Thoughts??(on what i posted) I really do appreciate your helpin me out..thanks
[Desire General] siliconaddict:
You really have to repeat "drain to shutdown->recharge procedure" a few times to make a difference, at least 5 times.

What I do to speed up the drain process is set screen brightness to 100%, switch on Wifi + GPS, run GPS Test by Chartcross Limited (Package name: com.chartcross.gpstest) and set GPS Test to keep the screen always on.

Then let the battery drain untill the device shuts down and recharge, let the battery drain untill the device shuts down and recharge etc. At least 5 times. This way you recalibrate the battery/charge mechanism.

So, install Overcharged and GPS Test (yes, 2 apps) and do this. Afterwards you can remove GPS Test. Then start using the device as normal but still do not install any apps, use the bare ROM.

This really works for me and other people, so it should work for you too.

On the other hand, I do not know which ROM you are using. Not all ROMs are "energy efficient" so to speak. Maybe your ROM is causing your problem. I use LeeDroid (which I have stripped even further) which gives me good battery life, but a bare metal non-Sense ROM is even better for battery life (less components that drain the battery).

And maybe you have a crappy battery by now and should you replace it.

What I am trying to say is that it is not easy to pinpoint the cause of your problem.
[Desire General] AdrianE46:
This appears to have f*cked up my battery life, actually. I followed the exact instructions, and as soon as i disconnected it for the last time and powered it on it immediatly went to 99 and then 98. Then i made a 2 minute call and now i'm at 96. All this in less then 5 minutes. WTF? (btw, this is totally new and never happened at all before)
[Desire General] icedan86:
I've been having issues with my battery life recently and I came across this thread. I haven't been through ALL the pages as its simply too long but I have read through the first 10 pages or so and the last few.

I tried following the calibration method explained in the beginning of this thread (without wiping battery stats as my phone isn't rooted) but it seems like my battery is already calibrated as when I power it off and re-connect to the a/c charger the LED is green immediately.

Can't really say I'm 'happy' with my battery life at all...

Straight off the charger yesterday, down to 99%... 98%.... 97%... within minutes. 1hr of idle time after that it was down to 90% (with wifi/3G off). By 5hrs later, 30minutes of browsing, a 5 minute phone call and 2 texts afterwards it was down to 69%. Completely idle for 12hrs... 20%! All this when wifi/3G are off. Pretty sure if I had to enable 3G for a few minutes I'll get the battery low warning. To be honest the battery life actually did improve with the 2.2 update but its still really poor.

Is there anything else I can try?

Cheers
[Desire General] Jgruar:
Um, that definetly isn't normal. I bet your phone isnt sleeping at all. Check for wakelocks in *#*#info#*#*. Normal idling consumption is about 1%/h. Mine loses 5%/8h and i've never "calibrated". Just proves, again, that this method improves your battery life as much as charging the phone while holding it upside down during a full moon.
[Desire General] icedan86:
Since the time i posted the previous post, my battery fell from 20% to 13% in which i spent maybe a total of 5mins browsing on 3G.

Nothing looks like an obvious cause to the problem...

Top 2 Other usage:

Running 8.4%

Screen on 4.1%

Top Partial wake usage is Facebook but a very small bar anyway
[Desire General] siliconaddict:
Just follow the procedure to the letter. Just an example, I had to work this afternoon/evening and left the phone at home. Phone was switched on, APN always on, hourly background sync (JuiceDefender), a few alarms went off and woke the phone and between 11:30 and 23:00 the battery went down from 100% to 94%. Six percent in 11 1/2 hours. I'm just saying, if it works for me it should work for you too.
[Desire General] wanted008:
Sory for being a noob but how do I go in to wakelocks? Thanks
[Desire General] rootrider:
Thanks. It REALLY works, doing EXACTLY as specified. Before I've never had more than 4.177 V having now 4.201 V, lasting a good time.
[Desire General] icedan86:
I did already... when I reconnect the phone after a power off the LED light is green already!

I'll try the longer method now.
[Desire General] kalfou:
I tried the battery calibration this morning at 6am, but didn't wipe battery stats as i dont have a rooted phone and the battery has lost one bar and its been on 3G all day with sync's going every couple of minutes. That, compared to how the battery was before, is amazing!!

I have a feeling though why its one bar down and its NOT to do with the 3G on, it was the fact i made a phone call in the late morning for around 15 minutes and was constantly on speaker phone... I'm wondering if anyone can back that up...
[Desire General] tvicpe:
Did I miss somenthing:

1) wait when bat. life is less than 4-5%, connect to charger

2) charging till led - GREEN (>8hour) and disconnect from the charger

4) turn OFF the phone and connect to charger

5) charging till led - GREEN (>1hour) and disconnect from the charger

6) turn ON the phone, wait 2 minutes, turn it OFF and connect to charger

7) charging till led - GREEN (>1hour) and disconnect from the charger

8) reboot into recovery and wipe battery stats

FINISH!

at 7) and disconnect from the charger - is right or... charger should be unplugged in 8) after which battery stats was wiped, or before???
[Desire General] kimlindo:
after disconnecting in step 7, you don't need to connect again, I think.
[Desire General] kalfou:
Just thought i would keep you guys updated on the progress. The phone was charged at 6am, its now 1.14am, roughly 19 hours with 3G on constantly, listened to music for half an hour, have been updating twitter every hour, email every hour, news feed every hour, spoke on the phone for around half an hour today and i have also sent couple of text messages and emails.

I also have live wallpapers on and my brightness is nearly halfway, along with using wifi for around 15 minutes today browsing the internet... This has been my EXACT activity for the past 19 hours! Battery is down to 92%.

After i had done the calibration this phone became the best phone i have ever owned in my life!

I have always found battery power to be up there at the top with things a phone must be good at.

By the way, i done this EXACT process at 6am

http://www.htcdesireforum.com/htc-desire-how-to/calibrate-desire-battery-it-worked-for-me-!!/

Good luck, O and one more IMPORTANT thing, if you fully charge your battery the first time and the GREEN Led does not appear at the end of the full charge (the orange just stays)... Take the battery out for a minute or two, clean the connections (usb connector/port) and put the battery back in, then continue with the process.

ONE MORE THING, Don't know if this makes a difference but i drained my battery to roughly 6% BEFORE i began this process.

THIS PROCESS DOES NOT REQUIRE YOU TO WIPE BATTERY DATA!

Good luck!
[Desire General] siliconaddict:
Doesn't matter, when you go into recovery the battery isn't charged anyway.
[Desire General] ranasrule:
when the instructions say "CONNECT TO CHARGER" is that the same thing as connecting it to your PC via USB and charging the device ?
[Desire General] 3722:
Connect it to the charger (adapter), as the usb charging is half the ampers and it will take longer and also I'm not sure if the process is tested with usb.
[Desire General] siliconaddict:
Yes it is. I usually charge via USB.
[Desire General] streetdaddy:
Can anyone confirm they've had similar results? As much as I'd LOVE it to be true, it sounds like a wagon full of horse manure...
[Desire General] Jgruar:
Im still amazed at how people think this procedure somehow alters the physical properties of the phone. It WILL use the same amount of power and the battery WILL have the same amount of power to give, unless you change the way you use the phone or what software it is running.

What changes, then? The way your percentages are shown. Maybe idling for 10h shows 1% drop, but then after doing something else might drop the % quicker.

Im willing to bet my left arm on that in the end, if you do a full cycle of 100% -> 0%, you will end up with exactly the same usage time with or without "calibrating".

If you are not aware, the led goes green at 90% by default.
[Desire General] goochj:
I don't think it's a matter of "changing physical properties", It's more like a tune up. Getting a tune up for your car doesn't "magically" put gas in your tank, it allows things to run more smoothly, thus gaining mileage. I'm not saying your wrong but I'd like to know exactly whats going on, just presenting the other side of the coin ;)

Anyways, I tried this a couple of times before it worked.

My phone would drop to 98 % about 30-69 seconds aster being taken off the charger. then to 90% in about 5 minutes.

The 1st and 2nd time nothing happened. The third time I noticed it stayed at 100% for about three minutes. I did it a fourth and fifth time and now I've been at 100% for 40 minutes with light usage, internet, wifi on (same conditions as when it dropped)

I didn't let the voltage drop to 5%, i think the lowest it went was 89 %
[Desire General] siliconaddict:
My results are not that good but still pretty good I think. My battery lasts at least 2 days with moderate use.
[Desire General] Jgruar:
Yeah, thats why I said "if you're running exactly same software and using the phone just like you did before". That car you're talking about would of course get better mileage if you actually did something to it. Im not a battery specialist, but something tells me turning off the device and THEN plugging it in doesn't somehow translate to 1 day of usage.

I'll eat my hat if your ACTUAL battery performance has gone up at all ;) It might display 100% for 40 minutes but don't think for a second that the device is running on holy spirit during that time. Just try it, run the battery completely dry and see how much better it actually performs.

Im guessing this "calibration" is based on non-linear percentage display, meaning it will drop % slower at first but as it nears the bottom it will go down in seconds.

As most of the people will have recharged by 20% or so, this won't be a problem. They're just happy that the percentages are ok now, even though nothing's changed.

Someone did say in this thread that his phone shut itself down at like 20% and the battery was dead.

If you want some REAL performance gains, try here or here
[Desire General] goochj:
Ive been running it for 5 hours now with constant heavy use. Txt, web, gaming, 3g and wifi. My battery would have been long dead by now. You might say it's just a number and my battery will die out soon, but if this was yesterday, it would have been dead already!

So for me any way, it has worked!

No " holy spirit", just properly calibrated :)
[Desire General] popkid:
This is exactly the behaviour I get (before and after the calibration steps), so you are not the only one, if I don't use my phone at all (with 3G on for background data, no wifi, no gps), I just about get 12 hours out of it before its down to 15%, if I actually use it for anything battery drain is quicker, i.e. if I browse the web on 3G it will flatten the battery in around 90 mins, my phone has behaved like this from new on both 2.1 and 2.2, love the phone and wouldn't be without it, but the battery life is a big bugbear for me... I've heard a hard reset can help, but it would take me a couple of days to re-enter all my data so I'm reluctant to try it!!

P.
[Desire General] popkid:
Quick Question, how many mV are you showing at empty?
[Desire General] Jgruar:
Well, install "currentwidget" and see your idle consumption. Work it from there.
[Desire General] popkid:
installed that... screen on it says 236mA how do I see what its doing screen off? can't see widget then, I've enabled the logfile option but it doesn't write anything?

P.

Edit: ok it is writing now... says 4mA screen off, then a huge list of processes?

is 4mA bad or good?
[Desire General] goochj:
Keep trying. I was having the exact same behavior. Idle for hours and as soon as I used it it plummeted. I got the green light right away when plugging in the 1st or 2nd time. The 3rd an fourth I saw the orange light and left it to charge a little while after the green light came on. Today I was at 100% at 9am , then heavily used my phone until 10pm. 13 hours or heavy use and I was down to 12%. I used to only last a few hours
[Desire General] Jgruar:
4mA is very good for idle, if it truly idles at 4mA all the time. You should expect ~0,5% / 1 hour battery drop or less with that idle current consumption.

Keep the widget logging for a long period of time and see if theres any connection between running processes/battery drain and if the phone actually idles @4mA all the time.
[Desire General] zoltrix:
So I followed the steps in this topic ans now, a few weeks later, my battery is worse then before?

Opendesire 4.0.15 both before ans after the calibration. What gives?
[Desire General] litening:
Maybe finally success...

Ok. Had tried everything on this thread to no avail.

Caved and sent my phone in for repairs last week.

Obviously, they returned it saying that they couldn't replicate the battery drain.

I may have found a breakthrough though.

I used Currentwidget to log battery usage during charging.

It clearly shows the battery starting to discharge some time after the gauge reaches 100% charge level. Some time later the battery level drops to approx 90% and starts charging again.

N.B. My battery level never reaches the magical 4,192mV level.

This is what I tried, with possibly very positive results. Also, it kinda makes sense to do this if your battery consistently doesn't reach its full charge.

1) I charged my phone until led green.

2) Set my screen to never turn off and brightness to 0. (so I could monitor the charging current constantly)

3) Used Currentwidget to monitor the exact moment when battery stopped charging. Interrupted the discharge cycle by shutting down the phone and janking out the battery for 10 seconds.

4) Repeated this procedure a couple of times.

I still am not on the 4,192mV mark, but miraculously, my battery lasts a lot longer.

N.B. My phone used to last 7-8 hours on a full charge with pretty moderate usage.

Today, after 7 hours and normal usage my battery is down only 27%.

Will continue to monitor this behaviour to make sure it's not just a fluke and the actual battery life has improved, rather than just the battery indicator showing better values.

Will keep you posted on further developments.

Hope this helps other desperate people like me out there.
[Desire General] HoLy4EvEr:
Guys here is my case with brand new desire from Amsterdam...I did exactly what the guide said...so far no changes to battery at all...yesterday I charged all night, today at morning I took off the phone from charger and went to work....after 1 hour I wanted to check out the time on mobile and I saw that the device already on 95%...(powered the screen once to check time) that's it....how can that be?!?! What drains my device battery??

Sent from my HTC Desire
[Desire General] quertiy:
I'm without words. This is incredible at least. DAMN! It's not like the battery is... better, it's 3 TIMES BETTER.

3g off

wireless on

brightness maxx

facebook and twitter apps - sync every one hour

facebook and twitter widgets (from launcher pro) - sync every 10 minutes

no task killer (though as i can see, magic marker could use a task killer)

no set cpu profile
[Desire General] HoLy4EvEr:
Dammit...what the hell I'm doing wrong then...?

Sent from my HTC Desire
[Desire General] cgorki:
Huge Imrovement for me as well. Like having a completely different phone/battery!

I followed the instructions of HTC support from the OT exactly.

When I turned off the phone and plugged the charger back in, the LED was still green and ont charging, but after the reboot and shutdown it charged for hours then and callibrated correctly!

I don't think that you need to wipe the battery stats in the recovery. But it makes no harm for my understanding.

Great guide!
[Desire General] quertiy:
ok, my phone really seams to last longer, but now it shuts down at 11%.
[Desire General] EddyOS:
Same usage before and after, same battery consumption (abour 24hrs) - this is a placebo and, as said before, calibrating a battery can't physically change it. Unless the calibration means the phone draws less power as it knows what type of battery it has
[Desire General] quertiy:
how can the screens that i posted 2 replys above, be a placebo? when i got home from work, after 12 hours, i usually had below 30% battery, with the same usage. Besides, the calibration makes the battery charge at the full 4197 mv, and not below (before that i had 4098 mv).

So, you are a placebo :)
[Desire General] EddyOS:
Did you miss that point? The battery can't magically double it's capacity. It's likely the calibration just tells the phone what battery it's using. There are a LOT more people saying it's not working than those saying it works. I for one have had NO difference in battery life so, in my opinion, it's a placebo effect. If YOU think it's worked then good for you

And grow up, what sort of a come back is 'you're a placebo'? LOL!!
[Desire General] jannen:
Maybe before, when you thought you had 100% charged battery - it was in reality 90%?

Now when the 100% is 100%, it feels it lasts longer...
[Desire General] EddyOS:
Just shows the calibration just changes the way it reads the battery levels - as posted earlier in this thread it seems to make things stay high for longer then drop off fast at low levels...
[Desire General] EddyOS:
Which is the affect of a placebo, but yeah I know what you mean. I did seem to work the first time but since it's gone back to 'normal'
[Desire General] madd0g:
In my experience, EddyOS is right.

I did the calibration, battery life got better for 2 days. Then after next charge, I lost 1% per couple minutes, so the battery lasted less then a day. I repeated the procedure, now there's no really big difference at the end. I get about 1 day 8 hours with Wifi and mobile ON and moderate use. Once battery got hammered after recharge to 80% in 20 minutes, but after that I still managed to get about a day and some hours of it. So basically, It doesnt do ****.
[Desire General] maschenazi:
I did the calibration, but it didn't do miracles to my battery life. Usually charging over night and with medium usage I use to have less that 15% battery left at 8-9 PM.

I installed BatteryFu (free market app), set it to enable data connection every hour and set the brightness to manual at about a quarter. And that did do miracles with the battery life. Fully charged and disconnected from charger last night at 10PM and now (6PM) I still have 75% battery left (with the same medium daily usage). I could charge every other day !! :)) If you don't mind getting your emails or facebook updates every hour...I think is a great compromise.

Anybody knows a better app than BatteryFu that does the same job?

Cheers.
[Desire General] jannen:
This whole 'calibration' is (at its best) changing how the % is shown

- not improving battery life.

Yes, it might show over 90% for 24hrs, but then boom in a minute youre battery is dead... (slightly exaggerating, no offence!)
[Desire General] zoltrix:
So theres this, and now ive noticed that it is taking a reaaaalll long time to charge via my laptop's usb port.

usually takes less than an hour for a full charge, and now its been almost 2 and it still at 28%

Not to mention that it only lasted like 8 hours on its full charge..

What did i do wrong?!
[Desire General] zoltrix:
After all this time, the phone is only 62%