X Current converts voltage from 12 volts to 220 volts only connect the device to a 12V 55 amp battery, 70A or 100 A and the device will output 220V to power (light bulbs - laptop - camera - DVD - mobile charger - fan - TV - receiver) or any electrical device . FEATURES: Internal battery charger -Cooling fan inside the inverter to protect it -metal structure helps cooling to protect it from overheat - meters showing the capacity of the battery and electricity coming out of the device in voltage and not used to power air conditioners