Tube power bank charger stainless steel material fit for 18650 2600mah li-ion battery 1 led indicator light for mobile phone Replaceable 18650 battery round charger for multiple electronic devices The Innovated patent power bank takes a replaceable 18650 battery. It is a smart device that allows you to charge your mobile devices. Such as Iphone, ipod, ipad, samsung galaxy, HTC, blackberry, ...