Not a 14, but a 12 mini. Wanted a powerbank that isn't overly expensive as I wasn't gonna use it much.

Went for the first generation of Anker, the PowerCore Magnetic 5K (as I also wanted a tiny one that wouldn't be bigger than the phone itself).

I was expecting bad performance (charging speed and capacity) but I'm quite surprised as it works better than expected so far. In the end I'm especially happy about the fact that it only costed about 30€ and fill its job perfectly.