Description
Makita 18V Li-ion Battery BMS Protection Circuit Board
This BMS (Battery Management System) PCBA is a replacement protection circuit board designed for DIY rebuilds of Makita 18V lithium-ion battery packs, including models BL1815, BL1830, BL1860, and BL1890. It handles essential protection functions such as overcharge prevention, over-discharge cutoff, and short-circuit protection to keep your battery pack operating safely.
Who Is This For?
This is a semi-finished DIY component intended for hobbyists and technicians with hands-on experience in battery assembly. It is not a plug-and-play replacement and requires specific tools and knowledge to install correctly.
What You Will Need
- 18650 power Li-ion battery cells (not included)
- Spot welding machine
- Soldering iron and solder
- Multimeter for voltage testing
- Compatible Makita 18V battery charger
Before You Buy
- No battery cells are included — this is the circuit board only.
- PCB color (blue, green, red, white, etc.) and LED color may vary by production batch.
- PCB layout and label design may differ from product images while maintaining the same electrical function and performance.
- This product is intended for experienced users. Basic electronics and battery assembly knowledge is required.
- Compatible with Makita 18V series: BL1815, BL1830, BL1830B, BL1860, BL1890.
Verify compatibility with your specific battery model and confirm you have all necessary tools before ordering.