Some folks will see the bad side of Jason in rcgroups. Go there and you will see some guys complaining already. This is what I like:
http://www.cheapbatterypacks.com/mai...an=PRC&cat=PXQ. They did their homework and wow. I like how they post the Factory C rate and the Ideal C Rate. MA has been in this industry long enough and they should do the same. I would never say a 2100mAh pack made from 15C cells are 20C. If I had 15C rate from the factory, I would just say 10C so people wouldn't try and blame me for any abuse of the pack. Play safe now or feel sorry later. Example: My controller are rated from the place that's doing them for 15S lipos, but I'm going to go with 14S just to give a bigger margin.