Vape pens are generally regarded as the simplest of vaping devices. The single piece battery assembly with built-in buttons ensures that you always get the results you seek. Vape pen batteries also come in a wide variety of colors and finishes, making them a fun addition to your vaping collection. From the Rocket 3 to the Pro series, pen-style vapes offer a great way to move from an older style e-cigarette into the more versatile vaping world and VaporFi has the pen-style batteries to get you there.