Overkill for most people, but perfect for my use case
Maybe a little expensive/overkill for most people.
I am going to use it at festivals to charge phones etc from solar panels and batteries, therefore I was specifically after something with a wide voltage range.
It worked well in a dusty environment last summer, even directly connected to a rather poorly charged 12V lead-acid battery.
It as a lot of openings (probably for temperature regulation), so definitely not waterproof.