22.5W Bidirectional Fast Charging Power Bank Module 5 Ports DIY Mobile Power Circuit Board 4.5-13.5V Lithium Battery Charge Discharge Management Board

Bidirectional Fast Charging Power Bank Module Circuit Board DIY

📌 Product Overview This bidirectional fast charging power bank module is a DIY power bank circuit board with 5 ports and max 22.5W output power. It supports 3 charging modes, with input voltage ranging from 4.5V to 13.5V, compatible with 2.8V~4.5V lithium battery packs. The board integrates synchronous boost and buck conversion circuit, high current USB-A ports with thickened copper sheets for lower heat loss. Reserved solder pads support optional 6V solar panel charging. Built-in 12bit ADC and coulomb counter for accurate battery capacity calculation, multiple fast charge protocols are supported for both input and output. It comes with full protection functions, ideal for DIY portable power bank assembly. ✨ Core Features

1. Max 22.5W output power, high conversion efficiency up to 95%.
2. 5 ports design: 2*USB-A, Type-C, Micro-B, Lightning port.
3. Rich fast charging protocols: PD3.0, QC4, QC3.0, AFC, FCP, SCP, VOOC, PPS and more.
4. Three charging stages: trickle, constant current, constant voltage mode.
5. Built-in 12bit ADC & coulomb counter to realize accurate power metering.
6. Complete protection: input overvoltage, output overcurrent, short circuit, temperature protection.
7. Reserved solar charging solder pads for 6V solar panel expansion.
8. 5P high-current USB-A socket design, thick contact copper sheet for high current output.
9. NTC temperature probe for real-time temperature monitoring and JEITA temperature control.

📋 Product Parameters

Item	Spec
Max Output Power	22.5W
Input Voltage	4.5V~13.5V
Battery Voltage Range	2.8V~4.5V
Operating Temperature	-20℃ ~ +60℃
Quantity of Ports	5 Ports (2USB-A+Type-C+Micro-B+Lightning)
Conversion Efficiency	Up to 95%
Dimension	71.90 X 27.00 X 7.5mm

📐 Dimension Info

• Board size:71.90 X 27.00 X7.5mm, flat laying height 7.5mm, USB-A socket height 6mm

⚠ Important Notes

1. R8 resistor matches battery capacity, please note battery capacity when ordering or contact customer service.
2. Solar charging will bypass boost/buck circuit and cause inaccurate power display, it will not affect normal use.
3. Voltage slightly over 4.2V is normal and will not damage batteries.
4. LED indicator: D3/D4/D5/D6 for battery level, LED1 for fast charging status.

🛠 Application Scenarios DIY portable power bank production, lithium battery power supply transformation, outdoor mobile power assembly, multi-port fast charging power source development.