As others have said the AW might have a physically smaller battery, simply because all the sensors and stuff inside take away space from it.

Huh, so I guess it really is the same as the old accessibility version. I gave Apple the benefit of the doubt, thought it would be much better, and it indeed had to use the new watch tech.

But from what I’ve heard the new version is just as inconsistent as the old one… That’s the main reason I stopped using the old one, it was just annoying that half the time it didn’t work.