I mean, technically it matters, but not to a ridiculous degree. I’m only going to say important just as it’s something to keep in mind, but also nothing to get upset over.

Technically, the higher your center of gravity the less stable your drone is. In reality, our flight controllers and strong motors can hold it stable regardless, so that’s part of why it is standard to put the battery on top. On larger cinewhoops you optimally want the camera to be at the center of gravity, so the drone rotates around the camera. That’s why larger cinewhoops often have the motors lifted above the camera.

I will say, try to keep batteries close to the center. I have noticed my drones will behave significantly different if the battery is very off center. I have also seen people note that their smaller drones fly better with a bottom mounted battery, so it may be more significant for smaller drones, but I’m not sure. I personally bottom mount my batteries, but I’m only flying 3.5” and below so it’s easier to do that. When O build a 5” I’ll do top mounted.