The Wagan TwB/DC Socket Cup Holder Adapter allows you to power multiple electronics in your vehicle while you drive. The Wagan TwB/DC Socket Cup Holder Adapter has two DC outlets and two USB outlets (5V, 2.1A) in a compact cup-holder design. This updated model of the Wagan TwB/DC Socket Cup Holder Adapter features a more powerful USB port, so it is now compatible with the iPad (and other tablets), plus e-readers. Simply plug the Wagan Adapter with 5V USB Port into your vehicle's 12V outlet and plug in your appliances. Not only does the USB cup holder power and charge electronics, it also keeps everything in a central location. The Wagan TwB/DC Socket Cup Holder Adapter has LED lights that display the status of your vehicle's battery.