The HempVAP Style Kit includes an ultra-slim stainless steel battery and a convenient Micro USB charger. Fitting most 510 thread vape cartridges, including the HempVAP hemp oil cartridge, our rechargeable 3.7 volt battery is exactly what you need for your vaping needs. Whether you need a new battery or a backup to ensure you always have power for your vape, the HempVAP Style Kit has exactly what you need.