Aside from that everything just works, and it has multiple ports (2 USB-C + 1 USB-A) & that build quality seems excellent... the Anker chargers I use are really small, highly portable, and they have a straight up-down design. I'm using the Nano II 65W and the 737 GaNPrime 120W.
Something like the Apple MacBook chargers assumes there's lots of space below the power outlet for the charger to hang down. But often that isn't the case in a cafe, or sometimes even an airport, where the power outlet is almost level with the base of the desk you're working at. In those cases, you can't plug a MacBook charger in directly. You could use an extension power cord, but that means you're now carrying extra cables.
With the Anker models I have, I just carry the charger itself and a short USB-C cable. The charger and cable fit into the zipper section of a small Lacdo USB Flash Drive Case I carry with me, so I have my charger & cables & USB sticks all in one small case. I usually take the 65W Nano II, which only has enough wattage for my laptop. But if I use the 737, I can charge my laptop and also charge my phone, plus maybe a Pebble watch while working.
And this is all in the size of something that's maybe half as big as my old Apple MacBook power bricks and their single USB port.
I did like how the Apple chargers had interchangeable heads for traveling overseas though. You can't do that on the Anker chargers. But the Anker ones do support international voltage, so you only need to plug a prong adapter on the end, no step-down converter or anything. I can fit an adapter for one country into my Lacdo case as well. It's nice to be able to grab just the one case and run out to the cafe when traveling.
I've been using the same Anker charger brick since 2014. It was $13.99, delivered.
It has two USB A ports. It has always charged everything at a good rate, regardless of brand, model, or age. It's reasonably-compact, the prongs (it's made for US plugs) fold for convenience when traveling, and it is UL listed.
Its present duty includes keeping an iPad running 24x7 and also charging my phone every night. It has charged my phone many thousands of times so far.
I'd update it to something newer, with USB C and USB PD and the bee's knees, but this old Anker thing is exactly the right kind of consistent and boring.
I don't think about it much because it has given me no reason to think about it.
That kind of boring behavior is remarkable, I think. So many other charging bricks I've used were just trash to use (slow or fickle, causing me to waste time with a USB power analyzer before giving up), or they died prematurely.
Same with the powered Anker USB 3.0 hubs on my desk. Those have only seen about 5 years of continuous use but so far they've been resolute in their trouble-free performance.
This stuff seems to be very much buy-once, cry-never.
Pretty much what one of the posters above summarized. They were one of the first aftermarket brands for phone chargers that you didn't have to worry about what protocol your phone was going to try to use for fast charging, it'd just work™ and be more affordable than OEM. Add in mostly decent build quality and they got a surprisingly strong base for it.
