EarthX ETX36D 6.9"x3.4"x6.1" Blue Light Weight LiFePO4 Complete Battery (with Battery Management System for Performance And Longevity) Extremely Light Weight, 70-80% lighter than a lead acid Very low self-discharge rate, can sit on a shelf for a year! Environmentally friendly, no acid or lead. Will not sulfate, corrode, freeze or boil over! Maintenance free. Fast Charging! Higher starting voltage means faster, more powerful, starts! ETX36D replaces YTX20HL-BS, YTX20H-BS, YTX24HL-BS, GYZ20HL, UB12350, Snowmobiles (check physical size to make sure it fits)