The Exxus Tap VV 280 mAh 510 Touch Activated Battery is slender like a pen style battery device. It has a 510 thread attachment port which allows it to fit easily with many devices on the market as that threading count appears frequently. The Exxus Tap was designed with simplicity in mind and is therefore extremely user friendly. The pre-installed, rechargeable lithium ion battery releases 280mAh of power and reaches temperature within ten seconds of the activation button being triggered. The battery’s power availability make is an ideal unit for e-liquids and aromatherapy oils primarily. No matter what is being vaporized with the Exxus Tap, it will always reach an ideal vapor point quickly and smoothly for a idyllic draw. PREHEAT and Variable Voltage Functions adjustable by a simple TAP to bottom of unit.