West Coast Cure
CUREpen Battery - BlackNot Specified
West Coast Cure’s newly redesigned CUREpen Battery is a value-packed stick design that’s versatile, sleek, and durable. The 510 threaded device includes variable heat technology (3.2V-3.8V), branded premium soft touch coating for a comfortable grip, available in black or white, and comes with a fast acting micro-USB charger.
Has lasted longer than any battery I've owned. The best.
Ultra Premium Variable Voltage Battery - Matte Black
Gear Variable Voltage 510 Battery (each)