Huge battery drain when unplugged

[Guest moneytoo]

It happen to me few times. I plug in the charger in the evening and unplug in the morning. Most of the times I have 50-70% battery left the next evening but sometimes there's extreme battery drain, draining 10% a hour. CPU is not 100% and there are no wakelocks.

Every time this huge drain occurs, I can open Spare Parts -> Battery info and "Battery health" shows "Unknown error". If I remember correctly, "Power plug" shows "USB" instead of "Unplugged".

I'm on the "official" 2.1 (build 8105), original Dell battery. Restart fixes it. Does anyone have similar issue?

[Guest fards]

there's been a few mentions of it, but no conclusive answers.

Nothing showing up in logcat ?