Please check your device power before buying, Because this USB to 12v cigarette lighter socket output 12v 8w Max. (It's not support some high power electric device,such as tire inflator, air compressor, car cleaner, car refrigerator and more) USB Port Power Converter: convert power from USB port to 12V car cigarette lighter socket Convenience: Easy to power on your car electronic equipments by extra power(such like a power bank) Plug and play: Easy to carry when travel. The part of PCB board is moulded by PVC which can extend its life Fit for Driving recorder, electronic dog, car charger and other automotive electronic equipment