Wagan EL2405 100-Watt Smart AC USB Inverter with DC Socket Designed to convert 12v DC to 120v AC power source Charges the electronics in the vehicle through the cigarette lighter socket Used to power a laptop, DVD player, MP3 player, cell phone, etc Enables to recharge cell phones and MP3 players that can be recharged from USB power Facilitates a auto-reset short-circuit protection, and low battery shutdown and overload protection