Lithium Battery Charging and Protection Integrated Board with 5V Input and 4.2V Cut-off

This integrated circuit board provides a comprehensive solution for DIY electronics enthusiasts working with lithium batteries. By combining both charging control and battery protection functions on a single compact board measuring 26mm by 17mm, it simplifies project construction while ensuring safe battery operation. The blue PCB design offers clear visual identification of component placement and connections. With 5V input compatibility, 4.2V ±1% charging termination, 1000mA maximum charging current, and comprehensive protection features including 2.5V over-discharge and 3A overcurrent protection, this board addresses the essential requirements for reliable lithium battery management in custom electronics projects.

Features and Construction

The integrated design combines multiple functions that would typically require separate components, saving space and simplifying wiring in your projects. The board's specifications provide measurable performance parameters that determine its suitability for various applications.

Material and Build

Constructed on a standard printed circuit board (PCB) with electronic components including integrated circuits, resistors, and capacitors arranged to perform both charging and protection functions. The blue solder mask provides contrast for component identification and trace following. All electrical specifications are implemented through these physical components arranged according to the circuit design supporting the stated voltage and current parameters.

Size and Practical Fit

With dimensions of 26mm by 17mm (2.6x1.7cm), this compact board fits easily into space-constrained projects. The small footprint makes it suitable for portable devices, handheld instruments, or any application where board real estate is limited. Despite its compact size, the board incorporates the complete circuitry needed for both charging control and battery protection without requiring external components for these basic functions.

Uses and Placement

The board's technical specifications determine its appropriate applications and installation considerations. Understanding these parameters helps ensure successful integration into your electronics projects.

Event or Professional Use

For workshop projects, prototyping, or commercial product development, this board provides a tested charging and protection solution that can be integrated into larger systems. The specified 4.2V ±1% charging cut-off voltage and 2.5V over-discharge protection offer reliable battery management that helps prevent damage during extended use. The 3A overcurrent protection safeguards both the battery and connected circuits during fault conditions or unexpected loads.

Everyday Home Use

In DIY electronics projects, hobbyist creations, or home-built devices, this integrated board simplifies working with lithium batteries by providing pre-engineered charging and protection. The 5V input voltage makes it compatible with common USB power sources and standard wall adapters. With 1000mA maximum charging current, it supports reasonably fast recharging of compatible lithium batteries while maintaining the safety features needed for home workshop environments.

Benefits and Buying Value

The integrated approach offers practical advantages for electronics builders seeking reliable battery management without complex circuit design. The measurable specifications provide clear boundaries for project planning.

Reuse and Low Maintenance

As a dedicated charging and protection board, it can be incorporated into multiple projects over time, providing consistent battery management performance. The solid-state components typically require no maintenance beyond proper connection and voltage compliance. By handling both charging termination at 4.2V ±1% and protection functions, it reduces the need for manual monitoring during charging cycles.

Why Choose This Product

This board offers measured specifications including 5V input compatibility, 4.2V charging cut-off, 1000mA charging current, and dual protection features (2.5V over-discharge, 3A overcurrent) in a single 26x17mm package. For electronics builders, this integrated approach saves design time, reduces component count, and provides tested performance parameters. The compact size makes it suitable for portable applications where space efficiency matters.