The ROCKPALS Rockpower 300 is a powerful and compact portable charger that is perfect for taking on the go. With a capacity of 280Wh, this charger can easily power your devices for hours at a time. It features four fast-charging USB ports, as well as a 110V AC outlet and a 12V car port, making it easy to keep all of your devices charged. The Rockpower 300 is also lightweight and easily connectible to a solar panel, making it ideal for camping or other outdoor activities. Plus, its 1.5 year warranty ensures that you'll be able to enjoy this charger for years to come.