Lithium battery charging and protection integrated circuit board with 5V input and 1000mA charging capacity

This compact lithium battery management board combines charging circuitry with essential protection functions in a single module measuring just 2.6 by 1.7 centimetres. Designed for integration with 18650 cells and similar lithium-ion batteries, it provides a complete solution for projects requiring safe battery management without the complexity of separate components. The board accepts standard 5V input, making it compatible with USB power supplies, phone chargers, and common DC adapters, while delivering up to 1000mA charging current with automatic voltage regulation. With built-in over-discharge protection at 2.5V and overcurrent protection rated for 3A, it helps maintain battery health and prevent potentially dangerous conditions during use.

Features and Construction

The integrated design brings together multiple battery management functions on a single blue-coloured PCB. This consolidation reduces wiring complexity and saves space compared to using separate charging and protection modules, while maintaining essential safety features for lithium battery applications.

Material and Build

Constructed on a standard fibreglass PCB substrate with copper traces, the board utilises surface mount technology for compact component placement. The blue solder mask provides clear visual identification of circuit paths and component locations. Electronic components include integrated circuits for charging control, MOSFETs for protection switching, resistors for current sensing and voltage division, and capacitors for filtering and stability. This combination creates a complete battery management system in minimal physical space.

Size and Practical Fit

With dimensions of 2.6 centimetres by 1.7 centimetres, the board occupies minimal space in projects and enclosures. The compact footprint allows installation in tight spaces where separate charging and protection modules might not fit. Standard mounting holes enable secure fastening to prevent movement or short circuits. The small size makes it suitable for portable devices, DIY electronics projects, and applications where space optimisation is important.

Uses and Placement

This integrated board serves multiple applications where lithium battery management is required. Its combination of features makes it particularly useful when both charging capability and battery protection are needed in a single, space-efficient package.

Event or Professional Use

For professional electronics projects and product development, this board provides a tested charging and protection solution that reduces design complexity. Engineers and makers can incorporate it into prototypes and finished products requiring lithium battery power, benefiting from the pre-engineered safety features. The 3A overcurrent protection supports moderate power applications while the precise 4.2V ±1% charging cut-off ensures batteries reach optimal charge levels without risk of overcharging.

Everyday Home Use

DIY enthusiasts and hobbyists can use this board to add safe charging capability to homemade electronics projects powered by lithium batteries. The 5V input compatibility means it works with common USB chargers and power banks, making it convenient for portable projects. Home users building custom power banks, portable lights, or small electronic devices benefit from the integrated protection that helps prevent battery damage from over-discharge during use.

Benefits and Buying Value

The combination of charging and protection functions in one board offers practical advantages over separate components. This integration simplifies project construction while maintaining essential battery safety features that help preserve battery lifespan.

Reuse and Low Maintenance

The durable PCB construction and surface mount components provide reliable operation across multiple charge cycles. Properly integrated, the board requires minimal maintenance beyond occasional inspection of connections. The protection features help extend the usable life of connected lithium batteries by preventing damaging over-discharge conditions that can permanently reduce battery capacity.

Why Choose This Product

This integrated board offers a complete lithium battery management solution in minimal space, combining functions that typically require separate modules. The 1000mA charging current supports reasonably quick charging while the 3A protection rating accommodates moderate power applications. For projects where space is limited or wiring complexity needs reduction, this single-board solution provides both charging capability and essential protection without requiring additional components or complex circuit design.