Optional external high capacity battery 5000mAh able to charge more than just smartphones, but also tablets and other devices. His charge is enough to fully charge your phone a few times! This is your "salvation" where there is no handy common network or car charger, or no electricity. Included already have adapters for Apple devices with built-in lightning, as well as an adapter for the Galaxy Tab. And, of course, it is possible to charge any device with a connector micro USB.