1. It is used to repair and assemble batteries pack, only for people who are familiar with battery performance and have practical experience in battery assembly. 2. Standard chip board PCB for replace for Dewalt tools battery DCB120 3. For Dewalt 12V 10.8V DCB120 Li-Ion Battery 4. Note: This product is Charging Protection Circuit Board without battery core. size:8x3.5x1cm color:As shown Material:PC+Metal Package Contents: 2 x Protection Board Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.