Li-ion Battery Case & PCB Board for Makita BL1830 BL1840 BL1850

$67.81 $83.27

DIY Li-ion Battery Rebuild Kit for Makita BL1830, BL1840 & BL1850

Breathe new life into your Makita 18V power tool batteries with this high-quality plastic battery shell and PCB charging protection circuit board kit. Designed for DIY battery rebuilds and repairs, this kit gives experienced battery assemblers everything they need to restore or upgrade their Makita BL1830, BL1840, and BL1850 battery packs to peak performance.

Made in Mainland China.

Key Features

Accommodates 5 Battery Cells: The shell is designed to house up to 5 Li-ion cells (cells not included) — customize your pack's capacity to suit your workload.
DIY-Friendly Rebuild: Ideal for rebuilding or repairing your existing Makita 18V battery packs, saving money versus buying new OEM batteries.
PCB Charging Protection Circuit: Built-in protection board helps safeguard against overcharge, over-discharge, and short-circuit conditions during use and charging.
High Compatibility: Engineered to fit Makita BL1830, BL1840, and BL1850 power tool batteries with precision for a secure, OEM-style fit.
Durable Construction: Metal and plastic composite build for long-lasting durability in workshop conditions.
Professional-Grade Quality: Suitable for experienced hobbyists, repair technicians, and power tool enthusiasts who are comfortable with battery assembly.

Specifications

Compatible Models	Makita BL1830, BL1840, BL1850
Cell Capacity	Up to 5 cells (cells NOT included)
Material	Metal / Plastic composite
Type	Battery plastic shell + PCB protection board
Customizable	Yes
Origin	Made in Mainland China

What's in the Box

1 × Battery plastic shell
1 × PCB charging protection circuit board
Note: Li-ion battery cells are NOT included.

Important Notes

Ensure all battery cell voltages are equal before welding the PCB to avoid imbalance issues.
Installation is recommended for individuals with hands-on experience in battery assembly and a solid understanding of lithium-ion battery safety.
Color may vary slightly from product images due to monitor settings and lighting conditions.
Minor measurement deviations may apply.

Frequently Asked Questions

Q: Are the Li-ion battery cells included with this Makita battery rebuild kit?

A: No, the Li-ion battery cells are not included. This kit contains the plastic battery shell and the PCB charging protection circuit board only. You will need to source 5 compatible 18650 (or equivalent) Li-ion cells separately to complete your battery pack rebuild.

Q: Which Makita battery models is this PCB protection circuit board compatible with?

A: This kit is specifically designed to be compatible with Makita BL1830, BL1840, and BL1850 18V lithium-ion battery models, offering a precise fit comparable to the original equipment.

Q: Is this battery rebuild kit suitable for beginners?

A: This kit is recommended for individuals who have practical experience in battery assembly and are familiar with lithium-ion battery handling and safety. If you are new to battery rebuilding, we strongly advise consulting a qualified technician or doing thorough research before attempting assembly.

Q: What does the PCB protection circuit board do?

A: The PCB (Printed Circuit Board) charging protection circuit helps manage and protect your battery pack during charging and discharging cycles. It is designed to help guard against overcharging, over-discharging, and short-circuit conditions, contributing to safer and more reliable battery performance.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.