BL1830 18V Battery Protection PCB for Makita BL1815 BL1860

DAZZLEEX BL1830 18V Battery Protection Circuit Board for Makita Power Tools

Keep your Makita 18V lithium battery packs running safely and efficiently with this precision-engineered BL1830 Charging Protection Circuit Board by DAZZLEEX. Compatible with BL1815, BL1830, and BL1860 battery packs, this PCB features dual integrated circuits (ICs) that continuously monitor each cell — giving your power tools reliable, intelligent battery management for drills, torque wrenches, angle grinders, and more.

Made in Mainland China.

Key Features

• Dual IC Cell Monitoring: Built-in dual ICs detect the voltage of each individual battery cell and track usage cycles for smarter battery management.
• Comprehensive Multi-Layer Protection: Provides overcharge, over-discharge, overcurrent, overload, overheating, and short-circuit protection — safeguarding your investment from common electrical hazards.
• High Discharge Performance: Rated for a continuous discharge current of 60A (pulse) and a standard high discharge rate of 15A, ensuring stable power delivery under demanding conditions.
• Shock-Resistant Build: Solid, durable construction designed to withstand the vibrations and impacts of everyday power tool use.
• Wide Compatibility: Fits BL1815 (5-cell), BL1830 (10-cell), and BL1860 (15-cell) lithium battery packs.
• Color: Green PCB for easy identification.

Technical Specifications

• High Discharge Rate: 15A
• Maximum Discharge Current: Continuous 60A, Pulse rated
• Discharge Termination Voltage: 13.75V
• Overcharge Protection Voltage: Single cell 4.25V ± 0.025V
• Overcharge Recovery Voltage: 4.1V ± 0.025V
• Over-Discharge Protection Voltage: Single cell 2.7V ± 0.08V
• Over-Discharge Recovery Voltage: Single cell 3.0V ± 0.08V
• High Temperature Charging Protection: >60°C ± 2°C
• Overcurrent Protection 1: ≥100A / 1s delay
• Overcurrent Protection 2: ≥180A / 100ms delay
• Short-Circuit Protection: ≥200A

Assembly Notes

For new battery cells:

• Always use power-rated lithium battery cells.
• Equip each set of six cells with resistors and capacitors to balance their voltages before assembly.

For battery pack repair/rebuild:

• Test the voltage of each individual cell before assembly.
• Charge all cells to the same voltage level before soldering the PCB. This is critical for safe and optimal operation.

Package Contents

• 1 × BL1830 Protection Circuit Board (PCB only — other accessories not included)

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Frequently Asked Questions

Q: Which Makita battery packs is this BL1830 protection circuit board compatible with?

A: This PCB is designed to work with Makita BL1815 (5-cell), BL1830 (10-cell), and BL1860 (15-cell) 18V lithium battery packs, making it a versatile replacement board for a range of popular Makita batteries used in power tools such as drills, angle grinders, and torque wrenches.

Q: What types of protection does this circuit board provide?

A: The board offers multi-layer protection including overcharge protection, over-discharge protection, overcurrent protection (with two-stage delay thresholds), overload protection, overheating protection (activates above 60°C), and short-circuit protection (rated at ≥200A). These features help maintain battery integrity and extend pack lifespan.

Q: Do I need to balance the battery cells before installing this PCB?

A: Yes — this is a critical step. Before soldering the PCB, ensure all battery cells are at the same voltage level. For new cells, use resistors and capacitors to balance voltages. For repaired packs, individually charge each cell to an equal voltage before connecting the board. Skipping this step can result in improper board function or potential damage.

Q: Is this circuit board sold with other components included?

A: No. The package includes only 1 × PCB circuit board. Battery cells, connectors, and other assembly accessories are not included and must be sourced separately.

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.