Charge your portable devices with a mains plug in your 24V vehicle Converts 24V accessory socket to mains power USB socket to power modern devices Maximum 600W output power Compact design easy to store in the glove box Power & overload indicator LEDs Battery low pre-alarm This 24V invertor converts the accessory socket into an modified AC mains output. There is a USB (Universal Serial Bus) connector to charge modern devices like mobile phones digital cameras & iPhones. The max 600W output is large enough to power & charge laptops & portable equipment & will even power small & medium-sized TVs.br There is built in overload overheat & short-circuit protection. There is also an alarm to indicate when the vehicle battery is low.