Features: Engineered with advances PCB technology, this lithium batteries protections board prevents overcharging/over discharging while optimizing energy output for 18V libattery extended tool runtime and prolonged battery lifespans. The heat resistant PCB withstands extreme conditions, featuring precise current control and universally compatibility for 18V systems for seamless power management across multiple tools. Ideal for contractors, workshop owners, and professional requiring uninterrupted operate. Performs reliably in construction site, outdoor workshops, and harsh environment where stable battery performances is critical for heavy duty drills, and grinders. Streamlines your workflows with easy installation and across device adaptability – durability upgrades that reduces downtime while maximizing battery efficiency across your equipment fleet. Specifications: Component: PCB Size:Approx.60x48mm/2.36x1.89inch Applicable model: Suitable for 18V lithium batteries Features: It has overcurrent, overvoltage and short circuit protections functions to ensures safe use of the battery Practicality: Provides reliability battery protections, extends battery life and improves equipment performances stability. Package Includes: 1pc Battery Protections Board note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.