Get ready to twist into the best stick battery for 510 thread prefilled cartridges with the HoneyStick 500mAh Variable Voltage Battery. Dial into your voltage with the silky smooth twist knob at the bottom of the battery that allows you to adjust between 2.0 Volts and 4.0 Volts to pick the perfect vape temperature. The HoneyStick 510 thread twist vape pen battery also has a pre-heat function so you can get your carts primed and ready.