[Universal Compatibility] 4x21700 Fast Charge Battery Power Case 22.5W for QC3.0 LCD Display DIY Power Bank Case 15W Wireless Charging Box Detachable Safely supports for /PD3.0/PD2.0/QC4+/QC4/QC3.0/QC2.0 protocols, tailored for various electronic devices. [Power in Your Pocket] This portable charger is lighter and smaller than most power , fitting easily in your bag or pocket for charging . Its 20000mAh battery pack keeps your device fully all day. [ Protection & What you get] protection , comprehensive system includes overcharge protection, short circuit protection, temperature control, and more. It is allowed and safe to board with on any plane, so you 't be caught on short of power when you are . [22.5W Fast Input & Portable] The battery pack also supports 22.5W fast input, the fast charge power bank only hours to be fully using a 22.5W PD adapter (adapter not included), 2-3 times faster than other power bank, to save your precious time. Portable travel battery pack, it portability just like a lighter cell phone, easily take it anywhere . [LCD Digital Display] Monitor your power levels with precision using the LCD digital display, keeping you informed at all times. Model Number:21700 Battery Case Item Type:DIY Box & Shell Batteries Need:4xflat 21700 lithium battery(Not Include) Colour:Blue Material:Plastic Package Contents: 1 * power supply case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.