I cannot comment on the above pack as far as proformance or quality because I've never used them, but I would not reccomend them for One I would suggest you run a hardcase lipo in your offload vehicle they are must safer than a soft pack. that site seems to sell a few hardcase lipos I see so I would look at those or possibly Goth Rc solutions on eBay. They are also in the us and can buy 2 5600mah 7.4v 40c-80c hardcase lipos with deans and a lipo bag for around $75. Or wait until hobbypartz comes back in stock which should probably. E within a week or too now that the Chinese new years is over.