Plus a portable battery charges more than just your phone. And with USB being so standard and available pretty much everywhere, it almost seems like a non-issu

Plus a portable battery charges more than just your phone. And with USB being so standard and available pretty much everywhere, it almost seems like a non-issue. It's not like back in the day when you had to have separate car chargers for different phones for example. I've seem USB charging ports in trains, airplanes, airports, hotel rooms, portable camping battery packs and even some power extension cables.