The Zoom Convert Fast Wireless Power Bank contains a 20,000 mAh Grade A Lithium Polymer battery, wireless charging transmitter/receiver. You can charge your phone through wireless charging or charge with a cable. The power bank itself can be charged with the integrated USB A cable or place the power bank (back side without silicone ring) on any wireless charging pad/charger for recharging. Three USB Outputs: 5V/2.4A max; Micro Input: 5V/2.4A; Lightning Input: 5V/1A. Supports 5W/7.5W/10W fast wireless charging for devices including (but not limited to): iPhone 8/8Plus/X/XS/XS Max/XR *Samsung Galaxy Note5/S6/S6 Edge/S6 Edge+/S7/S7 Edge/S8/S8+/S9/S9+/Note 9 * Google Nexus 5/6/7 * HTC Droid DNA, 8X * LG G3/G4, Lucid 2/3 * Nokia Lumia 920/930 *. It works with most plastic phone cases on.