How to install the handle of D850?

Hello, the installation method of D850 handle is as follows: 1. First, open the battery back cover and take out the battery. After removing the battery, remove the battery back cover. 2. Put the removed battery back cover into the box cover area inside the handle, install the handle on the SLR camera, then rotate the turntable on the handle and tighten the control screw to fix the handle and the camera together. 3. Take out the battery box and install the battery. However, it should be noted here that the handle generally has two battery boxes, one for installing the original camera battery and the other for installing the AA5 battery. Put the battery in your hand and you will see a handle control button on the handle. Move it from the closed position to the no position so that the camera can be used after installing the handle. I hope my answer can help you.