For those looking for a more colorful flair to the best vape pen battery for 510 thread prefilled cartridges or vape tanks - the HoneyStick's latest addition to its super-performer 500mah variable voltage slim Twist vape pen 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 Volta and 4.0 Volts to pick the perfect temp to vape the best 510 thread vape carts on. Don't get worried about taking your charger everywhere as this slim vape pen has a 500mah High capacity battery to make sure you have plenty of juice between charges and you lay down consistent power every time you take a puff.