Always on the go, but battery always low? No need to worry about your devices running out of power with the Renogy 15000mAh Solar Power Bank! Water-resistant, shock-resistant, and dust-proof, this portable battery bank was made for everyday adventurers. This lightweight pack conveniently features two USB charging ports so that you can charge two devices simultaneously. Attach this compact battery to your backpack with the included carabiner and travel worry-free on your next trip. Key Features High capacity lithium battery can be recharged via solar or USB. Compact size and minimal weight make the battery ideal for long treks. Dual USB ports conveniently allow for devices to charge simultaneously. Optimized for the outdoors, the charger is water-resistant, shock-resistant, and dust-proof. Built-in LED light for emergencies.