Ring PowerSource 500 Inverter +USB This is a replacement for the Ring RINV500 500W Inverter and now includes a 2A USB Output Socket making it ideal for charging many USB powered devices. 12v - 240V 3 Pin UK Mains Socket, 500w Power mains equipment from a 12V source The Ring RINVU500 provides the power to run mains equipment from a 12V battery (leisure battery, car battery etc.) and is supplied with crocodile clips for operating directly from a battery. Suitable for Many Electrical items needing up to 500W like: LCD TV's LED TV's, Stereo with amplifier, electric drill/driver, hedge trimmer, strimmer, camcorders, Stereos, small Fridges, Mobile Phone Charger, Games Charger, Laptop, and many other applications. NOTE: This RING RINVU500 500W Inverter does not have a cigar lighter plug, so connot plug directly into your cigar lighter socket (car cigar lighter sockets cannot deliver enough power to run a 500W Inverter) and must be connected directly to a 12V battery. The battery connection must be capable of sustaining a constant 25A load.