Next generation power bank that utilises twin high density lithium ion batteries to produce an incredible power to size ratio. It has a massive 20,000mAh capacity and will charge two devices at once. The input power is 5V/2.0 Amps and the output power is 5V/2.1 Amps. It has a handy power gauge and can be recharged in 12-13 hours from a USB port or a mains adapter. Comprehensive instructions and a Micro-B USB cable are included. An optional EVA carry case and a triple connector cable are available on request.