Well I've been looking at running a 2 cell lipoly pack for my mp777 for a while but I was on the fence as to running it unregulated or using the novak 6v regulator. I called airtronics but they said the servo wouldn't last with 7.4v + so I did some more searching and found a regulator made by VXR that puts out 6.7v so I pick up some speed and torque but (hopefully) won't shorten the life of the servo. I picked up a 1000 mah lipoly and regulator from www.teamtaylorracing.net If anyone has any experience with these please feel free to post your opinions. I should have it in and be able to give a review in a week or two. I'll keep you posted.