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. Replacement BAT610 18V Lithium-Ion Battery PCB Circuit Board For Boschs BAT609 BAT609G BAT618 BAT618G Li-ion Battery Replace Part Number BAT609 BAT609G BAT618 BAT618G. 4. Note: This product is Charging Protection Circuit Board without battery core. Colour: Green Material: PCB Package Contents: 3 x Protection Board 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.