Single battery detected protection board.Built-in dual IC detects each cell voltage. And remember the number of usesStable quality and anti-vibration. It is the best partner of for torque wrench and impact drill and angle grinder.This product includes a protective panel with a light and a complete battery case.Please notice there is no battery included. No side markings and labels are provided.DIY The capacity for your Machine battery.High quality for professional use.High compatibility with device and more durable.Help to repair and assemble batteries pack.Colour: black+blue+silverMaterial: PCB+ABS+metalPackage Contents:1 set * BL1830 battery case PCB BoardOnly 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.