With the G2 Adjustable Voltage Battery, you’ve got the power and control that your buttonless vape pen deserves. This replacement vape pen battery is clearly marked with a 2 – 4 volt adjustment to further hone your vaping experience to your specific tastes. A USB charger is included for the utmost convenience. Boasting a sophisticated black coloring, it will easily complement most models of vapor pens. Power doesn’t mean nearly as much without control. Have them both with the G2 Adjustable Voltage Battery.