Optimal Performance: Ensure your Milwaukee M18 tools operate at their best with this premium PCB board designed for efficient charging and long-lasting use. Advanced Safety Features: Built with robust protection circuits to safeguard against overcharging, overheating, and short circuits, enhancing battery life and performance. Durable Construction: Crafted from high-quality materials, this circuit board is engineered to withstand rigorous use in professional environments. Easy Installation: Designed for a perfect fit with Milwaukee M18 batteries, making replacement quick and straightforward. Color: As shown Material: PCB Battery Cell: A for 21700 / B for 18650 The actual product may have slight color differences, which will not affect the use. Package Contents: 1 x Charging Protection Circuit Board Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. The measurement allowed error is +/- 1-3 cm.