XTAR 21700-500PCM 5000mAh Li-ION 3.7V Protected Battery.
XTAR 5000mAh battery with PCM protection, against discharge, overcharge, overload and short circuit. With a voltage of 3.7V. The battery is made with lithium-ion technology. Provides higher energy density. Specially designed for flashlights. To charge the battery, use a high-quality charger with a charge cut-off at no more than 4.2V, such as
XTAR SC2 or
FC2.