These Brass Knuckles 900mah Gold Batteries are paired for our famous Incredibles.me Gas Lamp Cartridges. They are designed specifically to handle our very thick 6 pass cannabis Gas Lamp Vapes. 510 THREAD for standard cannabis vape carts.
There are variable volt batteries, they switch from 3.2v to 3.7v to 4.1v. If you are using our Savage vapes you will want to use the 3.2v or 3.7v setting. On the Gas Lamps you should use any of them that seem good for you. In the box you get a battery, and a screw on USB charger.