The 32x18650 Battery Case allows you to multiple batteries simultaneously, providing convenient solution. Its detachable design make maintenance and usage safe. This battery case caters to charging needs, making it suitable for wide devices and users. Whether home, in office, on traveling, this battery case ensures you have power. Tips: 18650 batteries are not included in the package, you need to purchase separately. Can only use the 18650 battery of which positive electrode is flat top. Please pay attention to the direction of the positive and negative poles. Number of batteries:32x18650 batteries Interfaces:Micro-USB/USB Specifications:A:C32:5V2A Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:Black Material:ABS Package Contents: 1 * Case Only the above package content, other products are not included. Note: Light reflection 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.