TP4056 Micro-USB Lithium Battery Charger and Protection Board in 26x17mm Blue PCB

This compact integrated board provides a complete charging and protection solution for 3.7V lithium-ion or lithium-polymer cells, combining a TP4056 charging management chip and a DW01 battery protection IC on a single 26mm by 17mm circuit board. Designed for 5V input from common micro-USB sources, it offers a practical, space-saving module for DIY enthusiasts, makers, and electronics hobbyists building portable power solutions, drones, or backup battery packs. It handles the full charging cycle automatically and guards against common battery faults, simplifying project assembly where reliable battery management is required but space or design complexity is limited.

Features and Construction

The board's functionality is defined by its two primary integrated circuits and their supporting components, assembled onto a standard FR-4 fibreglass substrate with a blue solder mask.

Material and Build

The foundation is a single-sided FR-4 printed circuit board, a common, rigid substrate for electronic assemblies, coated with a blue solder mask that protects the copper traces. Key components are surface-mount devices (SMDs), including the central TP4056 lithium battery linear charging chip and the DW01 battery protection chip. The board features a micro-USB Type-B female port for 5V power input and clearly labelled solder pads for connecting the battery (B+ and B-) and the output load, facilitating straightforward wiring even for those with basic soldering skills.

Size and Practical Fit

With dimensions of 26 millimetres in length and 17 millimetres in width, this board is designed for integration into compact enclosures or devices where internal space is at a premium. Its small footprint allows it to be fitted into a wide range of projects, from custom battery holders to the internal cavities of modified consumer electronics. The layout positions the connection pads along the board's edges for accessible soldering, though users should plan for additional clearance for wires and possible heat dissipation during operation.

Uses and Placement

This board is tailored for scenarios where a single lithium cell needs reliable charging from a ubiquitous 5V USB source while being protected from damaging conditions.

Event or Professional Use

For professional prototyping, maker workshops, or educational electronics kits, this integrated module serves as a ready-made, tested component, saving development time compared to designing a custom charging circuit. It can be used in the creation of portable demonstration units, backup power for exhibition equipment, or field-testing rigs where consistent and safe battery charging from a power bank is necessary. Its predefined protection parameters offer a known safety baseline for prototypes.

Everyday Home Use

Hobbyists can utilise this board in numerous home DIY projects, such as reviving old electronic devices with new lithium battery packs, constructing custom power banks, or building solar-powered garden lights with battery storage. Its micro-USB input makes it compatible with countless phone chargers and computer ports found in homes, simplifying the power supply setup. It is particularly suited for projects where the user wants to add rechargeable battery functionality without deep electronics knowledge.

Benefits and Buying Value

The value of this board lies in its integration of two essential functions, its standardised form factor, and the practical convenience it offers for one-off projects or small-batch builds.

Reuse and Low Maintenance

As a standalone module, it can be desoldered and reused in different projects if needed, and its solid-state design requires no ongoing maintenance. The protection circuitry actively works to prolong battery life by preventing deep discharge and cutting power during short-circuit events, which can help avoid premature battery replacement. This contributes to a more sustainable use of the lithium cell over its lifespan.

Why Choose This Product

Choosing this specific board provides a known quantity: a combined charger and protector with clearly stated parameters like the 4.2V charge cut-off, 3A overcurrent protection, and 5V micro-USB input. For users sourcing components, it eliminates the need to match and source separate ICs and design a PCB. The compact 26x17mm blue board offers a balance of functionality and size, making it a pragmatic choice for projects where every millimetre counts and verified circuit behaviour is preferred over a theoretical design.