ebuddy use active background sync too?

the only thing i need to on 24/7

it turns off the APN whenever the screen is switched off..

My batt last me only for 1 day... At most 1.5 days when there is no email coming in...

so i turn off everything and only on it when i need it...
doesnt that work the same way?

Ok, so I bump charge my battery and it's performing better now.
After the bump charge, I did some extreme battery draining activities just to test it out:-
1) downloaded 157MB of data through Wi-Fi for the Let's Golf game (it's currently free from Gameloft, BTW)
2) Played a couple rounds of golf.
3) Updating facebook, crusing round the forums with Tapatalk.
4) Sent a couple of emails
5) Trying out the new ADW launcher themes.
6) Made and answered a couple of calls and SMS (normal day-to-day usage)

Around the 12th hour, I still had 63% left on my battery. A full 24-hours and it was at 42%. This is just amazing. When I first used FroYo, the phone would never lasted that long. I'd say without me 'going to town on WiFi and playing 3D games' the battery should last like 2days or more.

Anyways, here's how you bump charge your battery with battery calibration steps embedded. If you're not rooted and have no way of wiping the battery stats, I suppose you can just ignore the step.

1.) 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 (use OS Monitor to make sure its at 100%.)
2.) Disconnect the phone from the charger, and power it off.
3.) Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the notification LED is green.
4.) Disconnect the phone from the charger and power it on and wipe battery stats, then reboot.
5.) Once the phone is powered completely on, power it off again and reconnect it to the charger until the notification LED is green for a minimum of 30-60 minutes.
6.) Disconnect the phone, power it on, and use it.

Here are a couple of things to note on my phone setup. They may or may not affect my battery performance results:-
[*] I have Juicedefender running
[*] I run an undervolted kernel. A somewhat unstable one I might add. I grabbed a nightly build from intersectRaven's file dump before realizing that he hasnt officially released it yet. And I'm kinda lazy to re-flash a stable kernel.

Cool tips cleave.

Btw how do you wipe battery stats?

You need to that from the recovery console. Amon-RA has that option. Not sure about the other recovery consoles though.

Anyways, the command to wipe battery stats is :-
rm /data/system/batterystats.bin

So if your recovery ROM doesnt have an option to wipe battery stats, you can boot into recovery and use adb to execute that command. It's not a good idea to do this through a terminal emulator on your phone or do an 'adb shell' thing while your phone is running your current ROM. For one, the system (and other battery indicator widgets) are using that batterystats.bin to display your battery status. They'll start throwing some crazy exceptions if you happen to remove the file while they're running.

(for you observant ones, you might notice that I omitted a couple of lines before that 'rm' command. That's intentional. I dont want anyone to recklessly copy-paste-n-run it and later ruin their phones. If you wanna run rm commands in your system directory, you better know what you're doing.)

my battery don't seem to last after upgrading to 2.1

if want to use the method need to root?

Nope, you dont need root to bump charge your battery. If you cant wipe your battery stats, just ignore the step. BTW, I stole this bump charging method from XDA. So all the credits should go to the posters. All I did was trawl around 30+ pages of posts and relay the info to you guys on LYN.

Actually the original instructions came from HTC itself. In other words, it is meant for non-rooted phone too. I'll paste the original message here:-


One thing to note is that the LED will turn green even if the battery is not yet fully charge (at 90%). Therefore, in step one, you'll need to make sure your device is fully charged before pulling out the plug and turning it off in step 2.

I see. Will do this immediately after got my Desire in 2days. Thanks!

EDIT : need to do this only once right?

This post has been edited by LuffyPSP: Jul 21 2010, 06:18 PM

yup, only once.

thanks bro for the input! you should make a separate thread on this, so people could now this method fast.

Thx for sharing cleave , will give a try today ..
Wonder if it can be practice on WM HTC like TD2 ?

This post has been edited by noprob: Jul 22 2010, 09:09 AM

I suppose so since it was engineered by HTC.

This post has been edited by cleave: Jul 22 2010, 09:41 AM

Hmm .. Okey , Worth trying
Will give a try .. since my gf starts asking to replace her TD2 battery edi ..

Not sure it's just me or the method is strange

I tried step 3 and step 5 - but it immediately went to green although the power is off... does it mean my phone battery is Ok and no bump charging required?

If you get green on Step 3, that means your batt is fine and cannot be bumped charged. The idea of bump charging is that a device in an on state cannot get 100% charged because it is contantly discharging. You then 'bumped' the charge further by charging it when it is off. That said though, from the responses on XDA, it is implied that the step 5 is what makes the difference, leaving it to charge for an extra 30mins in an off state.

from what i read, i dont need to do this if i just bought my Desire? whats the rules to do this bumping anyway?

I guess if you're satisfied with your battery life, you wont need to use it.