Smart Dual USB Power Bank Module

The Smart Dual USB Power Bank Module is a compact 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, a USB Type-C input, a Micro-USB input, and a 3-digit LED display that shows the battery percentage during charging and discharging. It is ideal for DIY power banks, portable chargers, battery backup systems, Arduino, ESP32, and Raspberry Pi projects.

Features

• Full Name: Smart Dual USB Power Bank Module with LED Display
• Dual USB-A output ports
• USB Type-C charging input
• Micro-USB charging input
• 3-digit LED battery percentage display
• Built-in boost converter (3.7V to 5V)
• High charging and discharging efficiency
• Built-in battery protection circuit
• Compact and lightweight design

Specifications

Pin Configuration

Note: Connect the battery to the B+ and B− terminals with the correct polarity before use.

Applications

• DIY power banks
• Mobile phone charging
• Arduino projects
• ESP32 and Raspberry Pi power supply
• Portable USB chargers
• Battery backup systems
• Emergency power supplies
• DIY electronics projects

Advantages

• Dual USB output ports
• Dual charging input options
• Digital battery percentage display
• High conversion efficiency
• Built-in battery protection
• Compact and portable
• Easy to install

Size

Package Includes

• 1 × Smart Dual USB Power Bank Module

Note: This module is designed for single-cell 3.7V lithium-ion batteries (such as 18650, 21700, 26650, and 32700 Li-ion cells). It is not compatible with 3.2V LiFePO₄ batteries unless specifically stated by the manufacturer. Use high-quality rechargeable cells with the correct polarity for safe and reliable operation.