Features: The for shell is made of high quality flame retardant material, and the structure is durable and high temperature resistant. Adopts 32 pieces of ei silicon steel sheet plating nickel composition, excellent quality, not easy to rust. It's a good for protection and replacement for original battery for case. The battery storage 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:Plastic Colour:Black Size:Approx.8.8x7x4.5cm/3.46x2.76x1.77in Type:As the Pictures Shown Net Weight:180g 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 Storage Box(no Battery Cell)