Morning sorry have been away. I think my battery is bigger , my motor is mounted right in front of the stuffing tube and the battery is mounted over it on a flat tray. I lays on its side to keep it low. I can remove battery by just lifting the front structure and sliding battery out. The majority of my ballast is actually around my stuffing tube ,with a small amount up front for stability. The boat is at the cottage so I don't have access to it right now but will get you some more info in the next couple of days if you need.