External battery “PB-20000”. This external 20,000 mAh battery with 4 outputs (2x 5V / 2.4A and 2x 5V / 1A) provides the extra power you need. It is equipped with LED that shows the charge level and an integrated USB cable for the input and Micro USB cable for the output. Compatible with most smartphones, tablets and other USB devices. It can be recharged through the USB port of your laptop or desktop computer.