I use the csrc packs. They are really good packs impo. All of the ratings are conservative from my experience. They don't come with the ends installed, but you can have them put a deans end on for like 3 bucks.

you buy them from www.commonsenserc.com, and they also have a support forum over here on RCU in the batteries section.

and yeah the eflite, esky, and align chargers are all compatible with the v2 packs.