Classic (Preheat) Cartridge Battery
The super reliable and popular 400 mAh Classic (formerly Preheat) Cartridge Battery comes with a 10 second preheat function and variable voltage. Compatible with any 510 threaded cartridge on the market, the Classic is the battery to beat.
It also works with the Wax Stick, a concentrate attachment that screws on like any cartridge.
Available in black, blue or silver, and includes a microUSB charger.