The Fenix Rechargeable ARB-L2 18650 Li-Ion Battery is a high capacity, rechargeable Li-ion battery designed for high-intensity flashlights. This 2600mAh battery features triple over-heat protection, as well as built-in protection against over-charge and over-discharge. The circuit board has a PCB protection bracket in the front and a stainless steel plate in the back for an impact-resistant, reliable battery. The compact design is ideal for high-intensity flashlights and the protruding contact point in the negative pole is convenient for battery series. There is no battery memory effect, with negligible self-discharge. This battery comes with a 12-month warranty.