The Rezound battery charges weird.
The whole calibration thing is a myth. The batterystats.bin file has no connection to battery life. Its just a log that, well logs what apps are using battery. It wipes clean after a reboot, so the charging to full, wipe stats, let die, charge to full does nothing.
There was an article by a Google dev explaining how that file works, and said 'calibrating' does nothing for battery life. Its all managed internally by the OS. Just charge like normal, and don't worry about it.