Ansley... is it a lot better with 9 cells, I just ordered 24 1100mah cells to make 3 packs for my electrajet but I may go with 9 cell packs instead if it's a lot better, I was flying mine with an 8 cell 500ar pack and thought the performance and duration was very poor...found that I had a dead cell in my pack so I'm glad to know that it will fly better with my new packs.