Ok, I just got the two new Zippy 25C Compact 4S 3700 mah packs set up with the deans connectors. For the first charge I did a very slow 0.5C, let it get everything in balance. The packs were nicely balanced from the start. I then let them sit for half and hour then did a 0.25 A discharge to about 85% capacity using the discharge feature in my TT 420 charger. Let them site half an hour then full charged.
Today went to the field did a one minute flight on each pack. Then charged them full (there is power at our field) at 1.5C. Took a three minute flight on each pack. Will now recharge to full and go for full flights.
At the end of each of the flights the packs were cool to the touch, didn't seem to be working hard at all, just the way I wanted.
Best, DennisT