Go outside and play but always make sure you have power with the BoostSolar. This solar-powered backup battery pack features a rechargeable 5000mAh lithium battery for long-lasting reliable power wherever and whenever you need it. When the BoostSolar is all charged up, you will have enough backup power to fully charge most smartphones twice. And with the 2.1 USB output you can also charge your tab
let. In addition to charging in the sun, the BoostSolar features a micro-USB DC input for use with most smartphone chargers. Use the standard USB port for charging mobile devices and the built-in fastener loops make strapping it on to a backpack a cinch. The BoostSolar has a rugged rubber exterior and an IPX-4 rating, so it is super sturdy and splashproof for every adventure.