You might be surprised when you check a wide selection type battery comparison...recently read one that at least reaffirms my own prejudice...Die-hard Gold hard to beat interms of availability (to purchase AND to return for warranty), price (about $80.00), CCA, size/fit, length of useful life in OUR Vipers. Am NOT recommending this for track as I really do NOT know about leakspill status...noting that we have them in 3 of 5 Vipers that see street usage with NO problems at all.