400mAh vape battery Slim 510 vape battery 4 Preset voltage settings (2.5-4.0V) Digital display screen Display shows battery life & voltage setting 15-second Preheat function Single-button operation Universal 510 threading Includes USB-C charge cable Cartridges sold separately Colors Assorted Enjoy the benefits of a smart battery of many colors with the Digital Display Slim Variable Voltage 510 Battery from Pulsar. This cartridge battery has a slim size and a digital display screen on the side that shows battery life and voltage setting, as well as preheat and charge indicators. With four preset voltage settings to choose from, users can prioritze rich flavors or thick clouds; the preheat function applies a low heat for 15 seconds to liquify crystals and remove clogs. The battery has single button operation and universal 510 threading to work with most vape cartridges.