I use Anker power banks. I have 3. A 20,100, 10,000 and 6800(?). I carry the 10k mostly. They all work great. No issues so far. I bought all 3 about 4 years ago. I use them when I travel not just for hunting.
I do this too. If I remember to leave my phone on airplane mode, it holds charge most of a week. My Garmin Inreach uses up it’s charge in half that time. Cameras also might need charging. I took 3 of the 10k chargers on a 14 day hunt and used about half of the capacity. Your results would likely differ, as mapping and texting might vary greatly. I tend to take more than needed, and also try to keep the batteries from extreme cold.
Correction: The ones I took were actually 20.1K. I guess I’d say carry the biggest one that’s not too big, lol.
