Nitecore RCR123A 650mAh Battery.

A reliable power source with 650 mAh capacity and 3.7V output voltage, optimized for use with a variety of flashlights. It features robust protection, guarding against high current spikes and keeping delicate internal components safe thanks to its small pores. In addition, it is equipped with a pressure relief valve that responds automatically to a sudden rise in temperature, thus guaranteeing safe operation. Impact resistance and high-quality protective film make it suitable for the most demanding conditions. Overcharging, over-discharge and short-circuit protection ensure not only excellent performance, but also long-term, safe use. With two MOS transistors, it offers more than 500 charging cycles, making it a reliable power source in a variety of situations.