Compatible Models: for Makita21700 Description 1. 【Optimized for Makita21700】: This protection board is precisely engineered to be compatible with for Makita21700 batteries, serving as an essential component for efficient power management and long-term battery health. It is built with high-quality FR4 fiberglass board and advanced electronic components. 2. : **Comprehensive Battery Safeguard** : Enhance the reliability and operational safety of your battery pack. This module provides crucial protection against various electrical stressors, ensuring your power tools function consistently without unexpected interruptions. 3. 【Advanced Overcharge and Over-discharge Protection】: Equipped with smart circuitry, this board diligently prevents both overcharging and over-discharging of your battery cells. This critical feature helps to significantly extend the overall lifespan and maintain the capacity of your for Makita21700 battery. 4. : **Integrated Cell Balancing Function** : Maximize the performance and efficiency of your battery pack with the built-in cell balancing capability. This ensures that each cell within the pack maintains an even voltage level, which is vital for optimal energy utilization and prolonging the battery's service life. 5. 【Reliable Performance for Power Tools】: Designed for stable and consistent operation, this protection board is an excellent replacement or upgrade part. It helps secure your power tools' functionality by providing a robust layer of battery management and protection. Package list: protection board*1