chris,
The Lipo pack that I run, Matt runs and several other Guys run is the Thunder Power 7.4 vdc 1900 mah 2 cell pack. Matt being Super Obsessed with Shedding weight uses these packs. Depending on the servo's and FBL unit will determine how many flights you get in between charges. If Memory serves me correct, Matt flies his twice with the set up he has.. I run V-bar on mine with JR8917 hv servos and have gotten away with 4 flights, Depending on the CGY750 settings I would charge mine every other flight. Hope this helps.. Also if you contact Ralph at FBL ROTORS UNLIMITED he has a ton of these Batteries that he is itchin to get rid of, Tell him Kevin sent you and he will take care of you.... by the way he is in Salt Lake City right now so don't freak if he doesn't call you back right away..
Best,
Kevin