Quad and RC are self explanatory. Looking down on it with lid open to the rear. Two spare batteries go in those slots. The charger and cord go on the right side, or props go there. Right inside the front is a slot for a tablet. My Samsung Tab S fits perfectly in there. If you fold the cord(s) just right, there's room for the spare prop bag in there. I keep a spare SD card in one of the smaller holes.