RE: How many battery packs do you have?
3 Venom NIMH packs, each 7cell 8.4v 5000 MAH. Each has been run about 25 times(I started keeping track after about 10 or more runs, at 13, 15, and 15 now). They're still like brand new.
And one Flightmax 2s 4000 mah 25C Lipo pack. 15 runs on it. Still good. Can't wait to see what it's like approaching 100 runs.