Lithium battery charging and protection board with 5V input, 4.2V cut-off, and 3A overcurrent protection for compact DIY and repair projects

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£5.98

Lithium battery charging and protection board with 5V input, 4.2V cut-off, and 3A overcurrent protection for compact DIY and repair projects

£5.98

Lithium Battery Charging and Protection Board: Compact 5V Management with 3A Safety

This integrated circuit board provides a complete solution for safely charging and protecting a single 3.7V lithium battery. It accepts a standard 5V input from a USB port or adapter, making it straightforward to integrate into DIY electronics, repair jobs, or small-scale projects. The board precisely controls the charging cycle, stopping at 4.2 volts to maximise battery life, and actively protects against common hazards like over-discharge and excessive current draw. With its miniature 2.6 by 1.7 cm footprint, it fits neatly into tight spaces where a dedicated management system is required but real estate is limited.

Features and Technical Specifications

This section details the precise electrical parameters and physical construction of the lithium battery management board. Every specification is engineered to offer reliable, set-and-forget operation for a single-cell lithium battery, providing essential safeguards in a minimal package.

Charging Circuit Design

The board's charging function is governed by a dedicated IC that regulates the process from a 5V DC source. It delivers a controlled charge to the battery with a maximum current of 1000mA (1A). Charging automatically ceases when the battery voltage reaches the precise cut-off point of 4.2 volts, with a manufacturing tolerance of ±1%. This accurate termination is crucial for preventing overcharge, which can degrade lithium battery health and pose a safety risk over repeated cycles.

Protection Circuitry Performance

Beyond charging, the board incorporates a protection circuit with two key thresholds. It disconnects the load to protect the battery from over-discharge when the cell voltage drops to 2.5V, helping to prevent irreversible capacity loss. Simultaneously, it monitors the output current and will trigger a cut-off if the draw exceeds 3 amps. This 3A overcurrent protection acts as a safeguard against short circuits or faulty components in the connected device, adding a vital layer of security to your project.

Board Construction and Quality

Practical Applications and Uses This board is designed for integration, offering a reliable power management core for a wide array of small-scale electronic applications. Its universal 5V input and essential protections make it a versatile component for hobbyists and professionals alike.

For DIY Electronics and Prototyping

Everyday Repair and ModificationsVersatility in Compact ProjectsKey Benefits and Value Choosing this integrated board offers tangible advantages over makeshift solutions or larger, more complex modules. It delivers essential functionality with measured performance parameters in a cost-effective and space-saving format.

Long-Term Value and Cost Efficiency

User Satisfaction and Peace of MindA Practical Choice for Your Build</h3 If your project requires a simple, reliable, and compact method to manage a single lithium battery, this integrated board presents a compelling solution. It consolidates multiple necessary functions into a single, easy-to-wire module with clear, documented performance data. By incorporating it, you add measured charging control and critical electrical protections, enabling you to create a more robust and user-friendly final product. Its specifications are designed for real-world application, providing a solid foundation for your device's power system.