Compatible Models: for Makita BL1830 BL1840 BL1850 18V Lithium Battery Material: High-quality PCB and electronic components Color: Green, Yellow, Black, Red, Blue (PCB and components/wires) Packaging method: opp Package list: 1 x Protection Board Description 1. 【Precision Engineered Compatibility】: Crafted from high-quality PCB and robust electronic components, this protection board is precisely designed for Makita BL1830, BL1840, and BL1850 18V Lithium Batteries, offering a perfect fit and dependable functionality for your power tools. 2. Comprehensive Battery Safeguard: Integrates advanced circuitry to provide essential overcharge and over-discharge protection, meticulously guarding your 18V battery cells against damage and significantly extending their service life. 3. 【Enhanced Operational Security】: Features critical overcurrent and short-circuit protection, proactively preventing potential electrical hazards and ensuring the safe and reliable operation of your 18V battery and connected devices. 4. Restore Peak Performance: An ideal replacement for a worn or faulty protection board, helping to revitalize the optimal performance and reliability of your 18V battery for consistent power output during demanding applications. 5. 【Optimized Power Management】: Engineered for stability and consistent performance, this board assists in maintaining balanced charging and discharging cycles, crucial for the long-term health and efficiency of your 18V lithium battery.