This past weekend I flew 8 flights on my WH Suk lasting about 12 minutes each and burned about 3/4 gallon of gas. When I recharged my A123 2200 ma pack I put 980ma back in. I wasn't flying real agressive but I had fun. If you don't mind buying a new charger it's the way to go. I do run a seperate nimh pack for ignition just because I still fly 72 mhz.