I'm an obsessive-compulsive care of my phone :-),
and I do not like to leave it charging overnight.
So I finally decided to develop a small utility that notifies every X minutes when the battery is charged, in order to remove the charger.
Also, I added a feature to notify when the battery charge is low.
You can set the notification ringtone, interval between notifications, number of notifications, charger type...
I hope you find it useful.
Please, post errors and get additional information at the official XDA thread: http://forum.xda-developers.com/showthread.php?p=20375918 or via email
Note that the Interstitial Ads that are shown when you leave the app are shown only the first 6 times that you exec the app. After that, no more Interstitial Ads.
PRO features: Remove Ads
Improvements in the notification playback
Don't play audible notification if phone in silence and you have not checked the "play sound even if in silent mode" preference