Pulsar Slim Spinner VV Battery | 400mAh | 12pc DisplayHighlights 12 piece display 400mAh variable voltage vaporizer battery 3. 3V to 4. 8V output Preheat function 200 puffs per charge Works with Pulsar Oil Tank Cartridges Universal 510 threading USB charger included Assorted colors 6 month limited warranty **Cartridges sold separately** The Pulsar Slim Spinner VV Twist Style Battery offers variable voltage with a 3. 3V to 4. 8V output. The 400mAh battery is capable of sustaining an average of 200 puffs