Mains power in your vehicle has never been so convenient! Simply slip it into a spare cup holder, and plug in to a free cigarette lighter socket. You'll then have access to 150W of mains power, and dual 2.1A (total 4.2A) USB charging outlets, to keep everything charged and running. 450W peak power provides additional performance when required too. Perfect for laptop charging and small mains powered devices. Internal cooling fan and over temperature, over load and output short circuit protection.