Heavy Duty Lithium Upgrade for YTX20 Size Applications 780 Cranking Amps Strong Starting Power 30Ah PbEq / 15Ah Actual Capacity (192Wh) Full Battery Management System (BMS) Protection Built-in Voltage Indicator Test Button Ultra Lightweight Only 5.18 lbs 4-Terminal Dual Polarity Design LiFePO4 Lithium Chemistry Safe & Stable Mount in Any Orientation Not for Automotive or PWC Use