1.It is used to repair and assemble batteries pack, 2.only for people who are familiar with battery performance and have practical experience in battery assembly. 3.Standard chip board PCB for replace for Dewalt tools battery DCB200 4.For Dewalt 20V DCB200 DCB201DCB203 DCB204 Li-Ion Battery Note: This product is Charging Protection Circuit Board without battery core. size:8x3.5x1cm Material:PCB+metal colour:Black+Green Package Contents: 1 x DCB200 Li-ion Battery PCB 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.