Poweradd Apollo3 8000mAh Power Bank Solar Charger for iPhone, Samsung Galaxy and More Smartphones Compatible with most kinds of 5V USB-charged devices. Stylish, compact and lightweight design fits perfectly into any bag, easy to carry on the go. Solar energy technology, environmental friendly and could recharge itself under sunshine for emergency purpose when outside. High capacity of 8000mAh with 2 USB output, USB1: 5V/1A(for cellphones); USB2: 5V/2.1A(for tablets). Quick charging current and charge 2 devices at the same time. Build-in Li-ion Polymer cells and microchips, high quality and long lifespan. More than 500 charge cycles during the course of its life. Industry-Leading Warranty: 24 months limited product warranty and 24*7 easy-to-reach customer service.