Nickel-Metal Hydride (NiMH) batteries are rugged, dependable, and don't require special care or storage regimens. AMain stocks 4-cell (4.8v), 5-cell (6v), 6-cell (7.2v), 7-cell (8.4v), and 8-cell (9.6v) packs in flat and hump styles for all RC Cars and trucks. Choose Traxxas, Gens Ace, Dynamite, EcoPower, more.