4Score 350mAh Twist Control Battery

This slim battery by 4Score offers all the features you need for your daily driver in a sleek and super-compact package.

The battery offers an easy twist function for temperature control, and you can enjoy a range from 2.0V to 4.0V. The preheat function offers an enjoyable hit regardless of oil thickness and is easy to activate with a double click on the button. 

The battery has a 350 mAh capacity and is made to fit any 510 threaded cartridges. When it needs a recharge just switch the tank for the included USB charger. The pen allows a full day of enjoyment until the battery life comes to zero.

This battery is 3.7 inches long and weighs only 0.8 ounces. It comes in a variety of colors, so you'll easily find something that matches your style.