i have the 13 turn model, and i have six four cell A123 batteries to play with, they are the 2350 Mha cells, i scored a bunch of the 1100 vpx packs as well and use them to run the flight packs, they rock and are easier to place in the planes as well the 109 astroflight chargers with the firmware update to make the compatible go for 50 bucks or so on the forums...., on another note, i bought some G10 .125 composite for motor plates, that stuff is tuff and strong, and hell on cutting tools[:-]