Featuring advanced temperature protection, this lithium battery board safeguards your tools from potential damage caused by excessive heat. Its robust design and durable materials ensure durability and consistent performance. Ideal for use in demanding environments, this protection board is a must-have for maintaining the efficiency and safety of your power tools. Features -Color:Green -Material:Plastic -Size:4.60X4.00X1.30cm/1.81X1.57X0.51in -Sturdy materials: constructed with reliable components to ensure performance and reliability -Temperature protection: features a temperature protection function to prevent lithium batteries from overheating and potential damage -Versatile application: compatible with a wide range of 21v lithium tools, providing flexibility for various tool replacements -Comprehensive safety: includes a protection circuit to avoid issues like overcharging, over discharging, and short circuits, enhancing safety -User friendly: easy to install; just insert the protection board into the battery for immediate use Package list: 1 x Lithium battery protection board