The IJOY CAPO 100 BOX MOD is a powerful and compact device paired with the industries most innovative 21700 battery line. IJOY 21700 battery is another amazing battery after IJOY 20700 battery which features fantastic battery life and high discharge rate with 3750 mAh rated capacity and 40A continuous discharge maximum. Providing outstanding performance and value, IJOY 21700 battery is included in the kit that drives the IJOY CAPO up to 100w and dramatically shrinks down the size of IJOY CAPO Box Mod. A single battery Box Mod but a dual 18650 batteries life, that is IJOY CAPO 100.