1. Built-in 5Pcs INR18650 Battery cells .2.DIY The capacity for your Machine battery .3.High quality for use4.High compatibility with device and more durable5.Help to repair and assemble batteries packBattery protection board with single cell protection detectionHow to DIY your new batteryNoticed :Please built-in High quatlity INR18650 30A Discharge Battery cells .Colour:blackMaterial:plasticPackage Contents:1 x Battery pack set(Some accessories are slightly different, which will not affect the use)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.