The Petzl Accu Core is a 1250 mAh Lithium-Ion rechargeable battery designed to perform well in low temperatures. A charging indicator. You'll know when it's charged, and a charging cable is included. It is compatible with the following lamps: TIKKID, TIKKINA, TIKKA, ZIPKA, ACTIK, ACTIK CORE, TACTIKKA, TACTIKKA +, TACTIKKA +RGB, IKO CORE and IKO. Headlamp Petzl ---Accu Core