At first I was torn between this and another compact case that fits 2 extra batteries. But after traveling with these Sparks and remote control cases, I believe it was the right choice. I have 5 batteries for the Spark, 4 of which I keep in a removable, padded compartment in my backpack. This case contains another one attached to the Spark. There are 2 strong elastic straps on the top of the Spark case which I use to store all my registration cards and licenses. So wherever my drone goes, so do