Usb power bank

What make of usb power bank, is best to use, for making the nature watch camera, it ideally needs to
be over 6000mAh in capacity?

They are expensive, but I tend to use Anker because they generally deliver what they promise and don’t turn out to be fake or under capacity.

I don’t think we’ve actually measured the run time yet, but I got 6 hours out of a 2nd generation Anker Astro E5 16750mAh battery, and if the battery capacity meter is anything to be believed it’s still got 3 quarters left. I’m guessing it might be good for 24 hours. I really should set it up at home and see.