it's usb-c, it's quite the standard these days.
I guess iPhone users are screwed than and they can't use new coldcard wallet, but I guess that is nothing...only around billion people use iPhone devices right now...
We need to progress past triple A's I think, and establish a slightly better, at least bigger capacity battery. I've used 18650s for a lot of things, and they function decently well for most things. Aren't as common as your double A's, and triple A's though. However, they aren't some specialised hardware, and can be picked up relatively cheaply, and easily from a variety of places.
I agree, especially when we have examples what happened with Foundation Passport and Keystone essential.
When you are not shipping device with batteries it's just another way to cut on production cost, that is something coldcard is trying to do with upcoming device.
It's much better strategy that Passport used in their new device, using the same rechargeable battery that was used in old Nokia phones.