The NL1835HP High Performance Protected Li-Ion Battery from Nitecore features a 3500mAh capacity, 3.6V of output power, and a 12Wh rating that works with most 18650 based flashlights and other compatible devices. The battery will continuously discharge at a rate of 8A, and the built-in protected circuit chip protects against excessive charge/discharge, including shorts circuits. The Li-ion cell has the ability to charge and discharge in approximately 500 cycles. The nickel-plated and stainless-steel jacket is a high-impact metallic wrapper, to protect the internal components inside. To charge the battery, use any of Nitecore's compatible smart chargers.