22.5W Bidirectional Fast Charging Power Bank Module With Digital/Light Display

Support PD QC4+/QC4/QC3.0/QC2.0 Bidirectional Fast Charging Power Bank Circuit Board with Type C & USB Support

Upgrade your DIY power bank or battery project with this high-performance 22.5W Fast Charging Power Module. Designed for bidirectional charging, this compact yet powerful circuit board supports multiple fast-charge protocols, including PD, QC, PPS, SCP, and more.

With up to 96% efficiency, digital or LED display options, and comprehensive protection features, this module is ideal for 3.7V lithium battery packs such as 18650, 21700, and Li-Po cells. Perfect for custom power banks, industrial applications, and advanced DIY electronics builds.

Key Features:

• 22.5W Fast Charging Output with bidirectional support

• Supports PD3.0, QC4+, QC3.0, PPS, AFC, SCP and more

• High efficiency up to 96%

• Digital display or LED lamp indicator options

• Automatic load detection & light load detection

• Designed for 3.7V lithium batteries 18650 and 21700

• Parallel battery supports only, not series

• Compact design suitable for DIY and industrial projects

Technical Specifications

Connections

After the module is wired, use a multimeter to measure the voltage at the B+ and B-contacts when the module is charging and discharging to see if the voltage is the same or the difference is very small, if the difference is large, then there is a problem with the wiring or the battery is aging.
Module Input Interface
Buttons: When short press action, open the USB port as well as the lightly loaded Type-C output port for external discharge and power display. When double-click action, close the USB port and Type-C output port and power display; if there is external power supply is present, only the output port will be closed
Type-C port: supports input and output
USB port: high current output interface
B+: battery positive interface, use must be welded, the wire must be thick, not too long
B-: Battery negative connector, use must solder, the wire must be thick and not too long

Applications

• DIY Power Bank Projects

• Portable Battery Packs

• Industrial Charging Solutions

• Lithium Battery Backup Systems

• Custom Electronics Builds

• Embedded Power Systems

• Fast Charging Development Projects

Precautions

• Designed for 3.7V lithium batteries only

• Parallel battery connection is supported, not series

• Ensure correct polarity before connection

• Use proper heat management during high-load operation

• Avoid short circuits during installation

• Professional handling is recommended for high-current wiring