Re: antigravity battery swelling
Had two of those exact batteries fail spectacularly. One was on a charger in my shop, came out to find a hole burned through the case. I was lucky nothing flammable was near by as I had pulled it from the bike to charge it. The second one was me being a dumb ass, I put it in my riding mower when it’s battery was dead and I was impatient to get the lawn mowed. I ran it for half an hour and when I lifted the seat to swap it back out it was very swollen, hot, and starting to smoke. Overcharged, I imagine from the crude system in the mower. I cut the wires and tossed it in a steel bucket in the driveway, it was still hot to the touch an hour later.
I guess I am not sophisticated enough for the fancy stuff.