[yash101]

That seems like a good battery mount. However, as of what I understand, it is made of Aluminum, so I think it may be a short hazard!

I prefer upright battery mounts because these batteries have a grip that helps you replace them. The battery holder depends on your robot's size/design/CoG. Place it to center your CoG. Also, make it so that replacing the battery is easy. If you can replace the battery within thirty seconds, you have done well! Also, your robot's shape really matters. We didn't really worry about where we placed the battery because we had a very stable robot already. If the robot was like our 2012 robot for rebound rumble, that easily fell over, the battery must have been placed in the bottom center.

This is off topic, but not worth making a thread for:
Many robots won't reach the weight restriction. Are we allowed to place dense materials, like a block of lead or steel, etc. in places on the robot to reduce the CoG?