Rich, You are correct. The way I understand it is these packs increase output to stay in volt/amp tolerances. If you put a load on it, somehow the battery pack detects that and increases output? Only way to check capacity is flying time, fly a couple flights, recharge and note how many mah you put back into the pack. Do it again until you find a very conservitive point. The plus is, it, they, are fast charge capable, 10amp rate capable, many charge cycles, 1000! and they stay charged over time. Down side, full power then nothing. So you need to fly, record charge mah in , fly, record charge mah in. Do it a couple three times to get in the ball park. Loaded with our popular ESV's will not say anything useful. BTW I am new on this chemistry and this is how I THINK you should approach it. Wayne McCosker............ STL