Brass Knuckles 900 Mah Twist Adjustable Battery

Brass Knuckles 900 Mah Twist battery for concentrate & cartridge-style vaping. It offers variable voltage along with a preheat mode for cartridge longevity and battery conservation. Brass Knuckles battery is designed to utilize concentrate oil cartridges and comes in Rainbow Edition iridescent, vibrant red, bright blue, Gold, black, white, and wood grain. Brass Knuckles battery features a 900mAh capacity with variable voltage and Preheat mode. It works like a regular vape pen battery with single button operation settings: 5-clicks will turn on or off the battery, 2-clicks will activate the Preheat mode for 10 seconds and 3-clicks will switch the voltage, LED light will change the color according to the voltage settings: Green - 2.4V | Blue - 3.2V | Red - 4.0V The Brass Knuckles 900 Mah Twist battery uses a 510 connection, which makes it compatible with all 510 cartridges. To charge the device, screw on the USB charger. Once you attach your cartridge and select your power sett