Will battery acid spill on me if I crash and end up upside down?
You have battery acid in your car already. I think that would be the least of your worries.
No. The battery pack is made of cells that look like large AA batteries. There is no "battery acid." The electrolyte in the battery is not a liquid ... it's more like a paste ... and the cells (all 6831 of them) are individually sealed in steel containers which are in turn enclosed inside the battery box which is enveloped by the frame and body. Upside down, sideways, right side up or tipped on a corner, there's nothing to leak out of the cells ... even in a crash.