Description This versatile lithium battery protection board is designed for tools, offering reliable temperature protection. It ensures the safety and longevity of your power tools by preventing overheating and overcharging. The board is compatible with various lithium battery packs, making it an essential component for tool enthusiasts and professionals alike. Features -Color:Green -Material:Plastic -Size:4.60X4.00X1.30cm/1.81X1.57X0.51in -Reliable: made from sturdy materials, ensuring the stability and durability of the product -Multifunction: equipped with temperature protection to effectively safeguard lithium batteries from overheating damage -Universal tool compatibility: suitable for various 21 v lithium tools, making it convenient for users to replace and install -Safety protection: builtin protection circuit prevents overcharging, over discharging, and short circuits, ensuring safe usage -Easy to use: simple installation process; users only need to insert the protection board into the battery to usePackage list: 1 x Lithium battery protection board