Moduł do budowy Power Bank 2xUSB 5V 2,4A USB-C Li-Ion 18650 LED QuickCharge

Power Bank Module 2xUSB 5V 2.4A USB-C

A compact module designed for building a portable power source (power bank). The circuit is intended for use with popular Li-Ion 18650 cells with a nominal voltage of 3.7 V (maximum 4.2 V). The module allows parallel connection of cells to increase the total capacity of the battery pack. It has a built-in LED display that shows the current charge level, charging and discharging status, and which port is in use.

The device features an extensive connector panel, consisting of two USB A outputs with support for fast charging (FastCharge and QuickCharge) and three inputs for replenishing energy: USB-C, micro-USB, and Lightning. The maximum charging current is 2.4 A.

Example applications

• Building portable power banks based on Li-Ion 18650 cells
• Emergency power for electronic circuits and LED lighting systems
• Portable power sources for mobile measurement devices
• Reviving worn power banks by replacing the control module
• Powering circuits that require standard USB A interfaces

Key technical features

• Compatible with cells: Li-Ion 3.7 V (maximum 4.2 V)
• Maximum charging current: 2.4 A
• Output connectors: 2x USB A (QuickCharge and FastCharge support)
• Input connectors: USB-C, micro-USB, Lightning
• Overcharge protection: 4.20 V ±0.05 V
• Over-discharge protection: 3.00 V ±0.10 V
• Current draw (active / standby): below 60 µA / below 50 µA
• Module dimensions: 68 x 27 x 10 mm

Benefits

• Versatility thanks to three popular charging connectors on one PCB
• Enhanced safety with built-in overcurrent protection and against over-discharge and overcharge
• Clear readout of operating parameters from the integrated LED display
• Time savings through support for fast charging standards for connected devices
• Compact dimensions for easy installation in enclosures with limited space

Note: When connecting cells to the B+ and B- pads, correct polarity must be strictly observed. Reversed polarity will damage the module.