[Al Skierkiewicz]

If one reads the manufacturer's sheet on this battery it would lead to believe that you can mount and use the battery in any orientation. I would suggest that upside down is a bad idea because you can't see the insulation that should cover the terminals and you can't see if the terminals are under stress. Please remember that the metal terminal that is sticking out of the red and black plastic on your battery is simply soldered to a round terminal inside the battery. Any stress can damage or break this connection. This is not a repairable fault. While the batteries we use are AGM and theoretically have the acid impregnated in a glass mat, I recommend that teams do not charge them upside down. This is just good practice to prevent some of the problems already listed.