Understanding how to charge the Elf Bar, you will need to use universal devices that support Ni-MH / Ni-Cd / Li-ion batteries. To do this, insert a battery into the appropriate compartment. It is not necessary to remove the remaining elements of the device. Charging is carried out up to 4.18-4.20. It is important to stay close to the cigarette in order to control the heating temperature of the battery.