My fault... I frozen an app and had forgotten. That was causing android os running wild with power consumed faster than what usb charger couldn't fill... battery was going down even when plugged
Sent from my Galaxy SII
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I did read the thread about someone preferring deadline over cfq but it doesn't explain which is a bigger battery saver and what about noop.
For the record last time I flashed a tegrak kernel over a cf-kernel I was missing the backup and restore features...