18V Li-ion Battery Charging Protection PCB Circuit Board with LED Indicator for Makita BL1830B BL1840B BL1850B
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Restore safe, reliable charging and power output to your 18V power tool battery packs with this Replacement BMS Protection Circuit Board! Custom-engineered to fit Makita-style 18V lithium-ion battery housings (including BL1830B, BL1840B, BL1850B, and BL1860B models), this advanced Printed Circuit Board (PCB) features a built-in multi-LED battery level status indicator. Equipped with intelligent Battery Management System (BMS) technology, it provides complete protection against overcharging, over-discharging, short circuits, and thermal runaway. Constructed with heavy-copper traces and high-grade surface-mount components, it ensures maximum energy transfer and long operational life for your rebuilt power tool battery packs.
Key Features
Direct BL1830B–BL1860B compatibility precision layout drops directly into Makita-style 18V battery shell enclosures
Integrated LED battery capacity indicator push-button LED status readout gives real-time battery charge monitoring
Comprehensive BMS safety protection guards against over-charge, over-discharge, over-current, short-circuit, and overheating
Heavy-duty PCB current paths low-resistance copper traces withstand high discharge currents required by heavy tools
Ideal for 18650/21700 cell rebuilds provides clean, pre-tinned balance lead points for easy spot-welding and cell connection
Why Choose Our Makita 18V Battery PCB
Factory circuit boards frequently lock out or burn out when a single cell dips in voltage, rendering an entire battery pack useless. This high-performance replacement protection board restores full functionality to your 18V battery pack, providing accurate LED fuel gauging and reliable cell balancing at a fraction of the cost of a new battery.
Perfect For
Repairing and rebuilding faulty BL1830B, BL1840B, BL1850B, and BL1860B 18V lithium battery packs
DIY power tool battery pack assembly using 18650 or 21700 lithium-ion cells
Power tool repair technicians, electronics hobbyists, and battery refurbishing workshops
Specifications
Product Title: 18V Li-ion Battery Charging Protection PCB with LED Battery Indicator
Compatible Battery Models: BL1830B, BL1840B, BL1850B, BL1860B (18V LXT Series)
Nominal Voltage: 18V DC
Features: Built-In LED Fuel Gauge, Full Multi-Protection BMS, Direct Drop-In Fit
Ideal Uses: Battery Pack Repair, DIY Lithium-Ion Power Tool Packs, BMS Replacement
Revive your 18V power tool batteries with intelligent protection—claim your BL1850B replacement PCB today.
