I don’t know if this explanation will help because words. Using the photo plane as reference:

Two tools, a flat head screw driver wider than the vertical gap where the hook is, and a needle nose pliers. The screwdriver is going to be used to try to rotate the hook to the bottom left to clear the horizontal metal band, while squeezing the two bars midway to help bring the hook tip past the horizontal bar

Book bans all the way down

That’s a good point, and lithium batteries get sparky when the lithium gets exposed. In the boat example I’m not going to worry too much about lead acid batteries, if they leak it should dilute quickly. Honestly unless punctured, I’m not going to worry about the lithium batteries really either. You typically find out about punctures in those rather quickly. Like before the water is the issue.

No expert but do have an electronics degree and somee EE theory courses later in life. I don’t think much would happen. Don’t be a direct bridge across the terminals yourself and I don’t think there will be much of an issue being in the same body of water as a battery with even close proximity.

But I could be very wrong.

Yep, using one to run clipper for my 3d printer with armbian as the OS. It’s been rock solid for me. There obviously some adaptation and discovery when trying to use the io as it’s similar-but-not the same as the raspberry pi io and manipulating it is not the same. But it works, it was available, it was competitively cheap, and it’s been stable

Plus I get to say I’m running my 3d printer on a potato