YTZ14S Z14S Lithium Ion Sealed Battery 12V - 300 CCA Motorcycle HONDA Shadow Spirit ACE Aero VT750 (MMG4) 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