Rechargeable CORE PETZL® 1250 mAh lithium battery for flashlights with hybrid concept (TACTIKKA CORE, TACTIKKA, TACTIKKA + and TACTIKKA +RGB). Provides excellent lighting performance, even at low temperatures. It recharges directly with the built-in USB port and takes 3 hours to complete a full charge. The CORE rechargeable battery offers an economical solution as the main power source or as a back-up battery. USB cable included. Contains CE certification.