The Sony VTC4 18650 batteries are perfect for powering vaporizers, electronic cigarettes, flashlights and other high-drain devices. These batteries do not require a protection circuit and their flat top terminals allow them to securely fit in many devices. The Sony VTC4 battery has a capacity of 2100 mAh, keeping your high powered applications running long and strong. This lithium-ion cell is a reliable and long lasting power source on which you can count to fuel your devices. One of the highest rated batteries for vaporizers.