PLEASE NOTE:This mod is for advanced users only. If the device is being used with a subohm atomizer, the user should have general knowledge of wattage, voltage, and the Ohms Law to avoid unsafe usage of the device. Use of subohm devices will void all product warranties with Vape Hut. Mishandling of Li-Ion cells can result in explosion. Vape Hut is not responsible for damage caused by mishandling or mischarging of Li-Ion batteries. Batteries used with this device should be rated 20A or higher, like the Efest 35A. Batteries should never be left unattended while charging and should be charged on a fireproof surface. It is suggested that batteries be charged using a LiPo bag for extra precaution. Battery must be removed from the mod in order to charge.