http://tinyurl.com/ocgawqe
YTX7A-BS 7A-BS Lithium Ion Sealed Battery 12V - 160 CCA Motorcycle Scooter ATV
Less volume and weight: 1/3 of normal lead-acid battery
Exceptional cycle life: more than 2000 cycles under JISD standard (lead-acid battery 150-300 cycles).
No maintenance needed for almost a year.
No pollution: safe for the environment. Does not contain any acid and heavy metals such as lead, cadmium, or mercury
Incredibly fast recharge rate