This power bank charged my cell phone about 7 times on a recent whitetail hunt. Charges very quickly and can charge lots of devices at once. I'd say safely count on 6-7 charges of a cell phone. The bank takes literal days to recharge if you don't use a super fast charger and cable, so be warned. I wouldn't hesitate to include this in my pack if I were to hike in to a hunt. I did not have a chance to test the cold weather functioning since Missouri deer season this year was t shirt weather. But it did hold up to dust and a few minor bumps during the hunt.