5V Step-Up Lithium Battery Charging Protection Board USB

The 5V Step-Up Lithium Battery Charging Protection Board USB is a compact and efficient power management module designed to safely charge, protect, and regulate power from a single-cell 3.7V lithium-ion (Li-ion) or lithium-polymer (Li-Po) battery. This all-in-one module combines a USB charging circuit, battery protection system, and a DC-DC boost converter, making it an ideal solution for portable electronic devices, battery-powered projects, and DIY power systems.

The module accepts a 5V USB input through a Micro USB or USB Type-C connector (depending on the model) to recharge the connected lithium battery safely and efficiently. It incorporates a built-in charging controller that automatically manages the charging process, helping to maximize battery life while preventing damage caused by improper charging.

For enhanced safety, the board includes comprehensive battery protection features, including overcharge protection, over-discharge protection, overcurrent protection, short-circuit protection, and reverse current protection. These safety mechanisms protect both the battery and connected electronic devices, ensuring reliable and long-term operation.

An integrated DC-DC step-up (boost) converter raises the battery voltage from approximately 3.0V–4.2V to a stable 5V DC output, allowing the battery to power USB-powered devices and electronic circuits even as the battery voltage decreases during discharge. The high-efficiency boost converter minimizes energy loss, extends battery runtime, and provides stable power for sensitive electronics.

The 5V Step-Up Lithium Battery Charging Protection Board is widely used in power banks, Arduino projects, ESP32 development boards, Raspberry Pi accessories, IoT devices, wireless sensors, portable electronics, Bluetooth speakers, LED lighting, robotics, embedded systems, DIY battery packs, and portable medical devices.

Its compact PCB design, lightweight construction, and simple wiring make it easy to integrate into custom electronic products and battery-powered applications. Many versions also include LED status indicators that display charging progress and battery status, allowing users to monitor operation at a glance.

Ideal for students, hobbyists, engineers, and product developers, this module provides a complete battery charging and power management solution for a wide range of portable electronic applications.

Note: This module is designed for single-cell (3.7V) lithium-ion or lithium-polymer batteries only. Do not use it with multi-cell battery packs.

Key Features

• Supports single-cell 3.7V Li-ion and Li-Po batteries

• USB-powered battery charging

• Stable 5V DC step-up output

• Built-in battery charging controller

• High-efficiency DC-DC boost converter

• Overcharge protection

• Over-discharge protection

• Overcurrent protection

• Short-circuit protection

• Reverse current protection

• LED charging and status indicators (model dependent)

• Compact and lightweight PCB design

Applications

• Power banks

• Arduino projects

• ESP32 development boards

• Raspberry Pi accessories

• IoT devices

• Wireless sensor nodes

• Portable electronics

• Bluetooth speakers

• LED lighting

• Robotics projects

• Embedded systems

• DIY battery-powered projects

• Portable medical devices

• Smart home devices

• Educational electronics

Benefits

• Safe lithium battery charging

• Stable regulated 5V output

• Integrated battery protection

• High power conversion efficiency

• Extends battery life

• Compact and easy to install

• Ideal for portable applications

• Reliable long-term performance

Technical Specifications

• Product Type: Lithium Battery Charging & Boost Module

• Battery Compatibility: Single-Cell 3.7V Li-ion / Li-Po

• Charging Input: 5V DC (USB)

• Output Voltage: Regulated 5V DC

• Converter Type: DC-DC Step-Up (Boost)

• Protection Features: Overcharge, Over-discharge, Overcurrent, Short Circuit, Reverse Current

• Efficiency: High-Efficiency Power Conversion

• PCB Design: Compact Lightweight Module

Package Includes

• 1 × 5V Step-Up Lithium Battery Charging Protection Board USB