I see a little bug. When I reboot my mac, if I am on battery, during the first minute, the fully charged icon is displayed but only after one minute, I have the real icon (on battery) that displayed with the time remaining.
I reboot three times to test and it's the same thing at each times. I am the only one with this bug ?
I can confirm that after a reboot the icon is not displaying the state correctly. Showed fully charged & plugged in state in the icon while I'm on battery power and nearly fully charged. After a moment (I guess the first update power updated event from OS X) this changes to the correct state.
Fix #22, state after reboot