I've been lookin around myself to see if there are batts that are better that would fit in the minis. The standard 6 cell mini pack is 94mm long, 34mm wide and 17 mm tall. I have found a battery that would probably fit, i usually find a way when its this close. Its this lipo, you can put two in and run them in series for 11.1v and 3000 mah for decent run time. This lipo is 100mm long (6mm longer) 34mm wide (same) and 21mm tall (4mm taller) ..........its so close, a few mm should be found in there somewhere........right?

http://www.hobbycity.com/hobbycity/s...00mAh_3S1P_20C

Heres one with a little lass MAH (1250) that should be an exact fit : http://www.hobbycity.com/hobbycity/s...0C_Lipoly_Pack