I found it really useful for work and other situations where I would find myself without both a charge, and an outlet, consistently.
The device takes a bit to charge up initially but it charged up my iPhone XR pretty fast with a bunch of juice to spare.
It’s unlike other charging banks I’ve bought that have enough juice for one charge, maybe two. I also like how slim and compact-ish the charge bank is; makes it easy to slip in your pocket along with your phone if needed.
Definitely going to be taking this on my next trip and have it be a back up in the winter in case power goes out since I live up in the mountains.