There are also options that are open source, like OsmAnd+ or Organic Maps.

I've yet to come across one that doesn't allow it, that's a pretty important feature for anything listening on a port to have.

Throw the whole thing into a YAML linter: https://www.yamllint.com/ and see what it says. Likely a spacing/indent format error or something like that.

Vapcell always seems a bit scammy to me, vs just buying Samsung/Panasonic/Molicel.

Those look to be Li-ion with a slight material change. They don't mention Wh/Kg so there's no way to know if it's actually better than the 21700 cells that are available.

Make sure cloudflare proxy is disabled on that DNS record.

Why is it so expensive? You can buy a fully functioning laptop with a local windows install for way less.

Even the new mac mini is $599 and that's a full on computer with really good performance.

There's definitely some of that in there too haha

Haven't seen a single bit of toxic stuff yet, my feed is all cute art and photography.

You can just change the port directly on the application for one of them.

Sure, but the cost of batteries is at the point where even with replacements every 10-15 years you'll spend less than you would buying power from the grid.

All of them, plus storage batteries are under much less abuse and are different chemistry that lasts a lot longer.