Features:The for shell is made of high quality ABS material, and the structure is durable and high temperature resistant.It can hold up to five 18650 mile ion batteries, but this is just a for shell, no battery.It's a good for protection and replacement for original battery for case.The protective box is designed compatible and easy to repair the broken circuit board.It can be used to repair and assemble batteries pack,only for people who are familiar with battery performance and have practical experience in battery assembly,pay attention to safety when operating. Specifications:Material:ABSColour:BlackSize:Approx.7.5x5.3cm/2.95x2.08inNet Weight:150g Note:There are no batteries in the package.Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1Set Battery Protective Box(no Battery Cell)