Recharge your smartphone or tablet on the go with the ONN Portable Battery. This 3350mAh power bank works with USB-charged devices, including iPhone, iPad, Samsung and other mobile devices and accessories. Its compact size makes it easy to carry around. It contains a rechargeable lithium-ion battery, a micro-USB charging cable and an LED indicator to display the charge percentage. Micro USB input 5V/1A, USB output 5V/1A. Simply slip this portable battery in your bag or backpack and you’ll always have extra juice for your favourite devices.