[jhautz]

Pumpkin, I use a 6.5" x 2" custom size battery tray from RC-Monster and I can fit most reasonable sized packs into it. It has a little space around the pack on the side on some of the smaller packs, but they dont seem to move as long as you tighten the straps down well. I have used it all race season like that and am yet to have an issue, its also nice to have it big enought to fit just about any pack. Makes it easier when shopping for battereis. You can grab whats on sale and still have it fit.