Leaving it charging with powered off, even it's green light now.

I guess I am just too used to the days when I can leave my Nokia running 4 days without charging

I see. but lets say i'm satisfied, will this bumping helps my battery goes longer?

wow,thanks for bring this tips up cleave!
im so gonna try it now

This post has been edited by -Franc-: Jul 24 2010, 08:34 PM

Yupp It works on TD2 too !
It improve tremendously ...
After full charge at 2 pm ... starts surfing , games , mp3 and youtube whole evening
Until 9 pm , still got abt 80% battery left ..

This post has been edited by noprob: Jul 25 2010, 09:05 AM

That depends on your setup like how many widgets are you using, do you have live wallpaper on etc. An indication that you may need to bump charge your battery is when all of a sudden you feel that the battery life gets shorter even though you're using your phone normally. Let's say that you normally get 1.5 day, out of the blue it dropped to 0.5 day. Your battery then either needs to be recalibrated or it is physically damaged. A total recalibration would be to discharge the battery totally, partial charge, wipe the battery stats and recharge it to full power. But that would need a root permission or some crazy looking adb commands (at least to those outside the Linux world), so HTC came up with this bump charging method that is more suitable for all users (with or without rooted device).

Anyways, EVO 4G is an awesome phone but with a terrible battery life (as reported by its users). Here's a post detailing how to fix it. There are probably some tips in there that may apply to other HTC sets:-
http://www.cloudave.com/link/fixing-the-ba...-evo-incredible

Another unproven myth is that task killers can improve battery life. This has been debated in countless occasions. Do task killers really help? Or is it just a placebo effect? Does it do more harm than good? Here are some good threads on the issue, read them if you have the time and you decide:-
http://androinica.com/2010/05/07/google-an...-are-pointless/
http://www.google.com/support/forum/p/andr...87bb09cba&hl=en
http://forum.xda-developers.com/showthread.php?t=683176
http://forum.legendroid.com/android-genera...-on-your-phone/

I used task killer on my 1.5 Hero. It did help in releasing memory and maybe prolonging the battery life a bit. But since going to 2.1, I didnt see any difference using a task killer in terms of battery life. In fact, on Eclair, I found that my phone was lagging whenever I have the task killer on. So, I abandoned it. On FroYo, task killer is made more redundant as FroYo's memory management is just fantastic. You'll get twice as much free memory than on Eclair.

ahh.. thanks for ur golden tips there and infos.. very valuable indeed.. and perhaps this thing should be shared in most FAQs of htc phones in this forum.. as not many ppl knew about it.. and some i guess dosent even bother to read other thread (like this one) and they just stick to one thread only so they would missed out on this one

thanks a lot for this very informative post. You're the man. I still didnt get my Desire. Damn maxis~~ hope tomorrow they'll call.

im getting this in adb .. where did i go wrong?


exec '/system/bin/sh' failed: No such file or directory (2) -


i really am not quite sure how to type it in adb btw.. any guides?

I assume you're in Recovery. Did you mount the filesystem?

i guess no..


update :

C:\androidkit\android-sdk-windows\tools>adb shell
~ # rm /data/system/batterystats.bin
rm /data/system/batterystats.bin


thats what i guess after entering rm /data/system/batterystats.bin.. it showed up back rm /data/system/batterystats.bin without saying anything else.. is it correct?

This post has been edited by pluginbaby: Jul 25 2010, 09:34 PM

ummm... yes. you can ls the directory to reconfirm.
Actually the safe way to do it is to mv the file to some other place and later if things get screwed up, you can always un-mv the step. But WTH.

so i did do it correctly btw ey? lol .. i dont even know how to move it.. haha

yup. if there .bin file wasnt there and you try to rm it, you'll get an error message. An echo would mean that the command was successful.

BTW when I wrote about how to manually wipe the battery stats, I was doing it hypothetically. I wasnt expecting someone would actually attempt it.

This post has been edited by cleave: Jul 25 2010, 11:17 PM

thanks.. got it.. i did it 3 times btw.. did once, rebooted then did it again and one more time again.. haha.. just to make sure that the echo was a success like output.. u should have known that once a guide posted, there would be itchy hands to try.. lol.. u should always post any disclaimer next time or sumone will hunt u down in case anything goes wrong.. kiddin.. thanks again btw

owh.. i did realized that bump charging and clearing the batt stats dosent do much on mine.. it does went back to green after a few minutes only.. seems like it is showing that i charged to full capacity ait?

If you charge it during off state and it straight away go green, it is at full capacity. Anyways, if you want a more detailed report on how your battery is faring, go to the Market and look for 'OS Monitor'. If you go to the 'Misc' tab you'll see some info about the battery. If you see 4000mV and you're around 90% capacity or more. Then the battery is fine, generally speaking.

Here's the good part though, something that can measure whether bump charging will have any effect on your batt. Go to the 'Message' tab and click the 'menu' button on your phone. Choose 'Option' from the pop-up menu and scroll down until you see the 'Message' section. In the 'View Log' option choose 'dmesg'. Tap 'Filter dmesg', check 'Enable Filtering', tap 'Tag Filter' and type 'batt' in the text box. Get out from the 'Options' (press 'back' a couple of times) to the 'Message' tab. You'll now see a more detailed stats of the battery condition, including the rate of it discharging. Apply some common sense here, a Desire/Nexus battery is 1400mA (it's actually more but HTC rounds the figure). So if your condition is at 100% and you see the reading is below 1400mAh (like 1300mAh or something worse), then you'll need to bump charge it and reset the battery stats as it is obviously giving the wrong reading. Some guys on XDA managed to get it up to 1480mAh through bump charging. That mAh is actually an indicator on how much juice your battery has. The more, the better.

Thanks for the good part!

My desire's LED never turns red when i charge it in off state after a full charge in on state.
Never did any bump charge before though.

Im charging it now and observing the figures. Seems like it is 100% at 1377mAh for 10minutes ago. Now it is still increasing and ill monitor it until it stops and ill try to wipe the batt stats once its not increasing anymore

update : sigh.. system detects it as full at 1363 actually.. it says batterycharge stop 1363mAh.. im trying to follow the bumping steps all over again.. seems like i did it wrong previously.. now its charging during off with the green LED not appearing yet.. seems like trying to charge to full i guess..



btw Cleave, u mentioned ur running an undervolted kernel. Mind telling what is ur clockspeed that u set in SetCPU? Ive been running my desire at 1113 and psxdroid seems sluggish a bit when i underclocked it to a lower clock. I know that im draining the battery so much but i really wanna hear what is the speed others have set in CPU for their daily tasks. Btw, I really dont want my agumon to be running slow or not it wont digivolve into a metalgreymon soon.. lol

This post has been edited by pluginbaby: Jul 28 2010, 09:51 PM

how come i dont see my battery capacity after i do that?
all i see is
active wake lock ds2784-battery ?

Guys, do you experience different charging status for on and off?

Seem like charging is longer in off mode than on.