The Smart Dual USB Power Bank Module (Type-C) is a high-efficiency 5V power bank charging and boost converter module designed to build DIY power banks using a single 3.7V lithium-ion battery. It features dual USB-A output ports, dual USB Type-C ports (Input/Output), a Micro-USB input, and an LED digital display that shows the battery percentage and charging status. It is ideal for DIY power banks, battery backup systems, portable USB chargers, Arduino, ESP32, and Raspberry Pi projects.
Features
- Full Name: Smart Dual USB Power Bank Module with Digital Display
- Dual USB-A output ports
- Dual USB Type-C ports (Input/Output)
- Micro-USB charging input
- LED digital battery percentage display
- 5V regulated output
- Built-in charging and boost converter
- Multiple protection circuits
- Compact and lightweight design
Specifications
| Specification | Value |
|---|---|
| Product Type | Power Bank Charging Module |
| Battery Type | 3.7V Lithium-ion / Lithium Polymer |
| Compatible Batteries | 18650, 21700, 26650, 32700 (3.7V Li-ion) |
| Input Ports | USB Type-C, Micro-USB |
| Output Ports | 2 × USB-A, USB Type-C |
| Input Voltage | 5V DC |
| Output Voltage | 5V DC |
| USB Output Current | Up to 2.1A (Typical) |
| USB Type-C Output | 5V / 2A (Typical) |
| Display | LED Digital Battery Percentage Display |
| Conversion Efficiency | Up to 90% (Typical) |
| Protection | Overcharge, Over-discharge, Overcurrent, Short Circuit Protection |
Pin Configuration
| Pin | Description |
|---|---|
| B+ | Battery Positive (+) |
| B− | Battery Negative (−) |
| USB-A | 5V Output |
| USB Type-C | 5V Input/Output |
| Micro-USB | 5V Charging Input |
Note: Connect the battery to the B+ and B− terminals with the correct polarity before use.
Applications
- DIY power banks
- Mobile phone chargers
- Arduino projects
- ESP32 and Raspberry Pi power supply
- Portable USB charging stations
- Battery backup systems
- Emergency power supplies
- DIY electronics projects
Advantages
- Dual USB-A charging ports
- USB Type-C input and output support
- Digital battery percentage display
- High conversion efficiency
- Built-in battery protection
- Compact and lightweight
- Easy to integrate into DIY projects
Size
| Specification | Value |
|---|---|
| Module Dimensions | Approx. 70 × 22 × 9 mm |
| Weight | Approx. 18 g |
Package Includes
- 1 × Smart Dual USB Power Bank Module
Note: This module is designed for 3.7V lithium-ion batteries (such as 18650, 21700, 26650, and 32700 Li-ion cells). It is not suitable for 3.2V LiFePO₄ batteries unless explicitly specified by the manufacturer. Always use a protected, high-quality rechargeable battery and observe the correct battery polarity during installation.







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