Between the advances in modern phone battery life over the years, and the relative affordability (cost, size, weight) of USB batteries, I can't recall the last

Between the advances in modern phone battery life over the years, and the relative affordability (cost, size, weight) of USB batteries, I can't recall the last time I actually used public ports. Why be tethered to a port on a wall when you can walk anywhere with an external battery temporarily in your back pocket or backpack? Get a battery that supports fast charging, and you'll be able to recharge a lot faster than most of those public ports anyway.