• After 15+ years, we've made a big change: Android Forums is now Early Bird Club. Learn more here.

Root Battery Percentage!

Jedii

Android Expert
May 4, 2010
1,112
257
Arkansas
You MUST have root before doing this.

I DO NOT take credit for any of this, but it works great and i wanted to share it with you all.

Root your device
- Flash your recovery
- Make a nandroid backup (just in case)
- Download THIS zip file
***UPDATED FOR DJO5. FOLLOW THIS LINK http://forum.xda-developers.com/showthread.php?t=849696***
- Place the zip file somewhere on your SD Card
- Boot into Recovery Mode
- Choose "Install from zip from sdcard"
- Choose the zip file that was downloaded
- Done! Easy right?

Here are the pics:

77085928.png


snap20100929184038.png


Here is the thread where i found this:
accurate-battery-icon-for-samsung-fascinate | Taypotts Blog | Taypotts Blog

Its a very simple process. Enjoy! :)
 
I would love this battery but I don't get that option when I boot in recovery....

The options I have are:

reboot system now
apply sdcard:update.zip
wipe data/factory reset
wipe cache partition

I even tried to rename the battery.zip file to update.zip but it errors out with "verification failed"

any ideas?
Thanks!
 
Upvote 0
I would love this battery but I don't get that option when I boot in recovery....

The options I have are:

reboot system now
apply sdcard:update.zip
wipe data/factory reset
wipe cache partition

I even tried to rename the battery.zip file to update.zip but it errors out with "verification failed"

any ideas?
Thanks!

I ran into that same issue. First you go to Apply sdcard:update.zip, and then it'll bring you into another menu, and the fifth option down is "install zip from sd card" followed by "choose zip from sdcard." From there you can navigate to where you put the battery.zip file, install it, and restart the phone (the restart option is the top one if you back up enough). Just ask if you have more questions!
 
  • Like
Reactions: nunyazz
Upvote 0
Thanks for being the guinea pig! How tough was it to install? And did you do a full backup first?
No its cake. Its even simpler and easier if you have the CWM on there thru ROM Manager; which I think you do??
If you or anyone does not I'd look into getting using ClockWorkMod/ROM Manager. This basically allows you to skip the step where you boot into recovery by holding in the volume button. You basically launch right into the CWM thru the app and then you make the same selection as mentioned above.
Its a tad of work upfront but in the long run will save you time and effort.
Clockworkmod installation how to for windows / *nix - xda-developers
 
Upvote 0
I ran into that same issue. First you go to Apply sdcard:update.zip, and then it'll bring you into another menu, and the fifth option down is "install zip from sd card" followed by "choose zip from sdcard." From there you can navigate to where you put the battery.zip file, install it, and restart the phone (the restart option is the top one if you back up enough). Just ask if you have more questions!

I don't get a different menu, it just errors out and brings up the same options again...
 
Upvote 0
I don't get a different menu, it just errors out and brings up the same options again...

Have you successfully flashed clockwork recovery?

Here, this may sound weird, but is your screen blue text or green text when in recovery?

If it is blue with just the 4 options, you are not in clockwork.

To properly flash clockwork, follow instructions in this link:

Clockworkmod installation how to for windows / *nix - xda-developers

You need to have the kernel flashed, which you probably do not. I know that via ROM manager, it will successfully "flash" clockwork, but you still need the kernel (which is provided above).
 
  • Like
Reactions: nunyazz
Upvote 0
I did not do a nandroid before flashing this. Its basically a theme, so i felt it was safe to not do a nandroid. Now, that being said....its always smart to do nandroid before doing anything to your phone. lol

I have had no issues at all with this. And, its actually kinda nice. I like the color coding the developer did with the percentages.
 
Upvote 0
Does this effect battery life at all? I know some battery juice display widgets and apps have this downfall.

Nope. Thats the beauty of this. Its not an app/widget.

It pulls the information straight from /system. It simply takes place of your stock battery icon (and of course adds the extra detail).

The percentage number is already in your phone and being figured, just not displayed. This does that for you without running a widget :)
 
Upvote 0
Nope. Thats the beauty of this. Its not an app/widget.

It pulls the information straight from /system. It simply takes place of your stock battery icon (and of course adds the extra detail).

The percentage number is already in your phone and being figured, just not displayed. This does that for you without running a widget :)
Confirmed.
This matches the info you'd get from any app/widget. The system itself knows what its own battery % is, thats how all those apps can access the info
 
Upvote 0
No its cake. Its even simpler and easier if you have the CWM on there thru ROM Manager; which I think you do??
If you or anyone does not I'd look into getting using ClockWorkMod/ROM Manager. This basically allows you to skip the step where you boot into recovery by holding in the volume button. You basically launch right into the CWM thru the app and then you make the same selection as mentioned above.
Its a tad of work upfront but in the long run will save you time and effort.
Clockworkmod installation how to for windows / *nix - xda-developers

I tried to run that on my sister's. Installed rom manager and the whole bit. Did the flash in there, but never got any update.zip file. So I was never able to even see the Clockwork recovery console. It said I had in ROM manager, but I could never tell for sure. That was after doing that Odin recovery thing. Anyways. I haven't tried to put CWM on my phone yet. Is the only benefit of it that you can run the update zip files without booting into the recovery console?
 
Upvote 0
I tried to run that on my sister's. Installed rom manager and the whole bit. Did the flash in there, but never got any update.zip file. So I was never able to even see the Clockwork recovery console. It said I had in ROM manager, but I could never tell for sure. That was after doing that Odin recovery thing. Anyways. I haven't tried to put CWM on my phone yet. Is the only benefit of it that you can run the update zip files without booting into the recovery console?

CWM is a custom recovery. You need it to install roms/themes/custom zips/etc..

You also need CWM to create nandroid backups.

You'll MUST have CWM in order to do the Odin kernel flash. That is why you cannot get the file to work.
 
Upvote 0
Would this be more accurate than battery widgets that take their % from the system? For example, my battery tends to charge full, and then when I pull out the cord, the widget reads 98%. Gyea?

Yeah. Thats normal. When i pull after having it on charge overnight, it reads 96%-98%.

They both pull from the system, but the good thing about this is it doesnt "run" constantly in the background. It simply displays what information is already there. :)
 
  • Like
Reactions: GoBruins
Upvote 0

BEST TECH IN 2023

We've been tracking upcoming products and ranking the best tech since 2007. Thanks for trusting our opinion: we get rewarded through affiliate links that earn us a commission and we invite you to learn more about us.

Smartphones