QUOTE(sesshoumaru7 @ Apr 6 2010, 02:50 PM)
haven't really tested the battery life drain yet. i just left the phone with wifi connected when i sleep for about 6hrs. battery indicator still show full tho. u guys don't wanna try it?

. but take note, some people say that after flashing the OC kernel, when u go to Settings, About, it will show Nokia N900 <unknown> version: <unknown>. i did the on device flashing method, my info still stays after flashing the OC kernel

You can restore the firmware information using the below command:
apt-get install --reinstall mp-fremantle-generic-pr
followed by a reboot.
It might also be mp-fremantle-003-pr or something else depending on your firmware variant
To Check, use:
dpkg -l |grep mp-fremantle
QUOTE(firstknight @ Apr 6 2010, 03:06 PM)
me using batt widget so can see percentage. it is accurate so i use it to see when to stop using and off all unnecessay stuff til i find a place to charge my phone.
oc seems very temptin to at least improve performance as long it doesnt damage the phone much.... hehe
Using that too, but something it will stop responding.
Try to set the interval update lesser for better battery life.
Alternatively, you can also use the "Desktop Command Execution Widget" which consume less resources as it's only text. It can show you the percentage as well as the mah. This widget is very powerful because as long as you know Linux commands, you can pretty much execute those commands.
There's already some build in command in the widget itself, and the widget is also can be customize. Nice widget.
Here's some list of commands:
http://wiki.maemo.org/Desktop_Command_Exec..._Widget_scripts