The lithium Ion powered vapor cartridge battery .510 universal thread offers added power to the cannabis vaping experience. The re-chargable Lithium battery comes charged and lasts many hours. It works with all cartridges in the cannabis method shop (method vapes, Kurvana, Rove etc.) Battery comes with a USB charger to plug in and charge. INSTRUCTIONS: Unbox battery,***BATTERY COMES TURNED OFF OUT OF BOX*** TAP BUTTON QUICKLY UNTIL LIGHT FLASHES TO TURN ON.