Strange went to charge a pack up, start voltage was 3.41 / 3.38 , charge at 4.6 Amps, got to a stage where the cell volts were 3.71/3.41 so I shut it off thinking, bad cell? Chucked it in the Slash to see what it did, gave it a few minutes then unplugged and checked the individual cells, 3.44 and 3.37