Comment 18 for bug 403303

So... until the devicekit-power is rewritten to take care of the erroneous mAh reading there is a simple workaround provided by Ubuntu itself:

https://help.ubuntu.com/community/EeePC/Using#Customizing%20the%20tiny%20desktop

Do not display the incorrect battery warning at login

gconftool-2 --set /apps/gnome-power-manager/notify/low_capacity --type bool 0