I bought a mavic back when it was released and didn't get it until winter so I had the option to return it. With no goggles out yet I decided to get another one when spring came. My first one made some noise when closing the front arms because the mesh around the motor wires was rubbing. The new one does not do this. I then noticed the battery connector area on the battery has been changed and has wider contacts now. I looked at a mavic battery in a store and it has the older style connector. When I checked the serial numbers my mavic, controller and battery are all 2017 dates. The battery in the store was a 2016 model. I am not sure if the battery connection has been changed on the mavic or not. Just thought I would share this. Most electronics changes often.