Li-ion Battery Charging and Boost Module 5V USB Output

Li-ion Battery Charging and Boost Module with 5V USB Output

This compact all-in-one module combines a Li-ion/Li-Po battery charger with a 5V boost converter, making it the perfect heart for your DIY power bank or portable electronics project. Simply connect your 3.7V Li-ion cell, charge via Micro USB, and power your devices through the standard USB-A output at a regulated 5V.

Key Features

• Micro USB input for charging the Li-ion/Li-Po battery
• USB-A output at 5V (boost converter from 3.7V battery)
• Onboard charge management IC with LED indicators (charging / full)
• Battery pads: B+ and B- for direct cell connection
• Compact blue PCB — easy to integrate into enclosures
• Built-in overcharge and over-discharge protection

Specifications

• Input: 5V via Micro USB
• Output: 5V USB-A
• Battery: 3.7V Li-ion / Li-Po (single cell)
• Charge current: ~500mA (typical)

Applications

• DIY power bank projects
• Arduino / ESP32 portable power supply
• Wearable electronics
• IoT battery-powered devices
• Robotics and maker projects