This product is component without battery core. 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. Type: Battery Storage Box colour:Black Material:plastic Package Contents: 1set x battery box (without battery, with PCB) Only the above package content, other products are not included. Note: Light 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.