You can keep your devices charged and running for longer with the revolutionary ROCKSOLAR Utility 300W battery! This high-capacity battery supply weighs under 10 pounds and is equipped to power a wide variety of devices. You'll never run out of juice with this device, as you can use an AC wall outlet, the included DC car charger, or even a ROCKSOLAR 60W foldable solar panel to keep your devices functioning at their peak performance. The solar panel has a kickstand design so you get the most efficient charges available, and is IPX4 waterproof so it's protected from water spray. Make sure you never run out of power again with the revolutionary ROCKSOLAR Utility 300W Battery!