I have a small anker Powerbank from a power draw.
I do have a 10k powerbrick, but it’s so slow, if I had a nice shiny fast charging anker 26/20/10k charger (either would be fine) I’d pass on my crappy slow ones to friends who aren’t bothered by a quick charge.
May even get a nice case, so not as effected if taken out in the cold (usually inside my coat).