Powertank-20 is built to follow you wherever you go. Along with 18w power delivery and quick charging 3.0 port powertank-20 ensures the quickest charge to your smartphone as well as the power bank itself. Powertank-20 features power indicator led along with the one-touch button that indicates the amount of battery life left. Never let your devices run out of power with powertank-20. 20000mah ultra-fast charging power bank with 18watt power delivery and qc 3.0