Battery - 17.7Ah Absorbed Glass Mat battery for Oilheads, most K-bikes and all /5. This Yuasa YT19BL-BS battery is 12 volts, rated at 170 CCA and 17.7 AH, The battery measures 7.44" x 3.19" x 6.69" (185mm x 81mm x 170mm) and weighs 12.5 lbs. (5.7 kg).