Duracell Powerpack 300EP... The Duracell Powerpack 300 is a stand-alone source of portable power for AC and DC-powered electronics such as a lamp, cordless phone, cell phone, laptop, GPS, TV and more. It features 300 watts of AC power to operate and charge electronics during a power outage to keep you safe and connected. When you're in remote locations like a camp-site, beach or park, you can connect a portable cooler to the power pack's DC socket, or inflate a bicycle tire and beach ball. The Duracell Powerpack 300 is a perfect companion when travelling in your vehicle. It features a built-in air compressor for inflating tires, jumper cables to boost your vehicle battery without needing another vehicle, and a detachable LED flashlight that makes it easy to find your way in the dark.