Brass Knuckles variable voltage preheating batteries are the ideal battery when vaping CBD, thick extracts, or if you just want to get a better pull than the buttonless version. Preheating function warms the liquid before use, just tap the button twice for a 15 second preheat and off you go.

Features:

900mAh adjustable voltage vaporizer battery w/ preheat function
Battery dimensions: 14mm diameter, 96mm length
3 different temperature settings (Blue 3.2v, Yellow 3.7v & Red 4.1v)
Includes USB Charger

How to Use

Click button 5 times to turn on/off
Click button 2 times to activate 15 sec colour changing preheat function
Click button 3 times to change temperature (Blue 3.2v, Yellow 3.7v & Red 4.1v)