The Everest 300 is tough and durable for your off road adventures. With 289 watt hours of capacity, the Everest 300 can power mobile phones, laptops, tablets, drones, cameras, mini-fridges, e-bikes and CPAP machines to keep you powered wherever you are. Perfect for camping with family or out on location with friends, the Everest 300 can be used for any occasion when you need portable power. backpacking activities.