Go-anywhere AC is now a thing, and in fact, I’ve been writing about it since 2019, when Zero Breeze released its first luggable, battery-powered air conditioning unit. Conceptually, the Zero Breeze Mark 3 (Roman numerals begone!) Incredibly, this is still the case, though you can at least now operate the Zero Breeze from battery power while it's simultaneously charging—something that wasn’t possible on previous iterations. (You still can’t run the Zero Breeze while charging if the battery is completely dead. This is a downgrade from the Mark II battery, which has all of the above plus a second USB-A port.