The most advanced high-power Lithium-Iron Phosphate battery technology available for your bike. BikeMaster® Lithium-Iron Phosphate batteries will provide you with ultra-high cranking amps and twice the service life of a conventional battery. At 1/3 the weight of a lead acid battery, these batteries contain no corrosive liquids and no heavy metals, making them environmentally friendly. All BikeMaster® Lithium-Ion batteries come with a two-year warranty. Cylindrical cell with energy storage welding technology for higher output/Built-in charge and equalizing protection board, preventing battery from over charging/Remarkably low self-discharge for extended storage periods Built-in charge and equalizing protection board, preventing battery from over charging Remarkably low self-discharge for extended storage periods Superior vibration-resistant construction allows multi-directional installation without damage Suitable for low-temperature environments