At 1C (2.0 amps) full charge took 45 minutes and 33 seconds. Total input 825mAh.

I thought that at 2C (twice the capacity), charge time would have been cut down by quite a bit, but it didn't. The charger I'm using must seriously monitor and regulate the amperage regardless of what you manually program it to.

Maybe this was the problem: There is one menu in the charger that I didn't understand. When I set the charger to charge at 4 amps, one of the sub-menus says "C: 4.0 amps D: 2.0 amps" Does anybody know if this could have increased the charge time when charging at 2C?