I also have a car battery charger and what it does is if the battery is still left connected when its already full, it will automatically go for a minimal discharge cycle where it discharges the battery by about 10% and recharge it. It will do this indefinitely until disconnected.
Asus TF101 16GB B60 with keyboard docking
Samsung Galaxy Note WiFi 10.1
Desktop PC, Windows 7
Yamaha Tyros 4 K/B 9 (Music)
I'm in the camp of plug it in whenever after the initial charging cycle of full to empty 2-3 times. If these are quality batteries they should not overcharge, they have the ability to know when there charged, so it's been said. Not sure how you got you dock to 1% Janor, mine drops to 3% and quits drawing from keyboard. The firmware updates have changed battery performance, but it seems everyone is getting different performance now. I still get about 8 hours from each half, maybe it is the way people are configuring or apps they are using that are causing anomolies in battery drain. If you have too many apps syncing too often or your screen is set to maximum brightness or ______, your going to burn through your battery.
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