High-Quality Construction: Crafted with premium materials, this power bank module ensures durability and reliability. Its compact design packs a high power output, making it ideal for various DIY applications Advanced Compatibility: Supports a wide range of protocols including PD3.0, PD2.0, QC4+, QC3.0, and more. It's designed for 3.7V lithium batteries like polymer, 18650, and 21700, which should only be connected in parallel to prevent aging Efficient Performance: Achieve up to 96% efficiency with a charging current of up to 5A. Features include automatic load detection, high-current USB output, and support for small current mode. It also includes safety features like overcurrent, short circuit, and over-voltage protection User-Friendly Design: Equipped with a digital tube display and LED power indicator for easy monitoring. Note: cables are thick and short for optimal performance, and connections are securely welded Full protocol, the mainstream open protocol basically support the charging current up to 5A, efficiency up to 96% output power up to 22.5W, efficiency up to 95%. Automatic load detection / light load detection High-current USB output interface Support small current mode Support digital tube display and LED power indicator Output overcurrent/short circuit protection Charge timeout/over-voltage protection Support /PD3.0/PD2.0 Support QC4+/QC4/QC3.0/QC2.0 Support FCP, SCP (5V4.5A or 4.5V/5A) Support FCP, SCP, HSCP Support SFCP to charge battery Support PD3.0/PD2.0, AFCFCP, SCP , PE1.1 The product appearance and printed words depending on the batch, but this does not affect use. Colour:As Shown Material:PCB Package Contents: 1 * Fast Charging Power Bank Module 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.