Just got done building my 2nd Hell Raiser and i bought a thunder power 730 mah to go along with it. I thought that this plane flew good with a 1320 but dang!!!!!! it hovers and pulls out of the hover alot faster than it did before makes it about an ounce and a quarter lighter. I would recomend getting a batt this size to anyone who wants more performance out of their hell raiser. you get about 6-7 min. flights on the 730.

Tyler