Extend the Life of Your Makita 18V Battery Pack

Keep your Makita power tool batteries running safely and efficiently with this purpose-built BMS PCB Electric Protection Board. Designed as a direct replacement for the BL1830, BL1840, BL1850, and BL1860 18V lithium-ion battery packs, this board acts as the brain of your battery — monitoring cell voltage, current, and temperature to prevent damage from overcharging, over-discharging, and short circuits.

Whether you're rebuilding a worn-out battery pack or replacing a faulty protection circuit, this board is an affordable, effective solution to get your tools back in action.

Key Features

Compatible Models: Makita BL1830, BL1840, BL1850, BL1860 18V Lithium-Ion Battery
Built-In BMS Protection: Guards against overcharge, over-discharge, over-current, and short-circuit conditions
Direct Replacement: Drop-in fit designed specifically for listed Makita battery series
Lightweight Design: Weighs only 50g per board — minimal added bulk
Blue PCB Colour: Easy to identify and install
Prolongs Battery Life: Proper cell balancing and protection circuitry extends overall pack longevity

What's in the Box

1 × BMS PCB Protection Board (Blue)

Specifications

Compatible Models	Makita BL1830, BL1840, BL1850, BL1860
Battery Type	18V Lithium-Ion
Colour	Blue
Weight	50g
Packaging	Bag
Country of Origin	Made in China

Why Replace Your BMS Board?

A failing or faulty Battery Management System (BMS) board can cause your battery to not charge, drain too fast, or even become unsafe. Replacing this low-cost component is far more economical than buying a brand-new battery pack. For more information on lithium-ion battery safety, visit the U.S. Consumer Product Safety Commission (CPSC) Lithium-Ion Battery Safety page.

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Frequently Asked Questions

Q: What Makita battery models is this BMS PCB protection board compatible with?

A: This protection board is specifically designed for Makita 18V lithium-ion battery packs including the BL1830, BL1840, BL1850, and BL1860 models. Always verify your battery model number before purchasing to ensure a proper fit.

Q: What does a BMS (Battery Management System) protection board do?

A: A BMS PCB protection board monitors and manages the battery cells to prevent overcharging, over-discharging, short circuits, and overheating. It is essential for the safe and efficient operation of lithium-ion battery packs. A faulty BMS board is a common reason why batteries stop charging or lose capacity prematurely.

Q: Can I install this BMS board myself?

A: Yes, this board is intended as a DIY replacement component. However, basic electronics knowledge and soldering skills are recommended. Always discharge the battery fully and take appropriate safety precautions when working with lithium-ion battery packs.

Q: Will this board work with third-party Makita-compatible battery packs?

A: This board is designed for genuine Makita BL18xx series packs. Compatibility with third-party or aftermarket battery shells may vary depending on their internal layout. We recommend confirming cell configuration and connector placement before installation.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.