Features: 1. Cylindrical battery charging functionConnect the power supply, insert the lithium ion battery, the charger will automatically start to charge the battery. The input is for multiple fast charging protocols. When the power supply is QC3.0&PD3.0 fast charging protocol, the input voltage and current are 9V2A/12V1.5A, and the charging current of both slots is 2A; when the power supply has no fast charging protocol, the default input is 5V2A, and the output current is 2Ax1 or 1Ax2. brand new and high quality 2. USB mobile power output function When the external device supports the fast charge protocol, it will output according to the voltage and current required by the external device, and the maximum power is 18W. 4,Compatible For Phone 11 12 13 pro max X XR XS 8 7 6 plus/5S,for Mobile Phone Tablet Cellphone USB LED light USB fan and more. Note: The type-C and USB interfaces can charge two external devices at the same for time. When the two interfaces are output, the output voltage is only 5V, and a single interface output supports fast charging.3,A DIY power bank box, without battery, needs 2pcs 18650 or 21700 rechargeable battery (Not included),DIY USB Power bank for cellphones or tablet and more,with Digital Display. Specifications: Material: ABS Color: Gray,Green ,Red Size: 128x57x30mm Input port: Type C Female Output port: USB or Type C Female Type C Input: for DC 5V/2A,9V/2A,12V/1.5A USB and Type C Output: for DC 5V/2A,9V/2A,12V/1.5A Package Includes: 1 X DIY 18650 21700 Power Bank (18650 battery are not included) 1 X USB charging cable note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!