Review on 🌬️ O2COOL 10-Inch Battery/Electric Operated Indoor/Outdoor Portable Fan with AC Adapter - Tilts 90 Degrees by Kelly Dorsey

I just got a cool fan 02 and loaned it to my son for a weekend camping trip. Temperatures were in the 80's. I asked him what he thought of it. The first night he said it was amazing. On the second full day, he said it saved a life. He let the fan run at low speed for about 6 hours on battery power. We have a shellfish screen house that tends to get a little warm inside. A fan was used to keep the air moving. I checked the voltage on the batteries when he came back and they were at 1.4 volts. Based on that, I expect them to offer a reasonable amount of additional usage hours. It's not a box fan, so you won't be moving cubic feet of air per second, but air movement is good even on low settings. I plan on using it to blow the heat out of my 10ft tent at night before bed. If it continues to work as well as it has so far, I will be very, very happy with my purchase. By the way, I buy 8 D-cell batteries that Amazon sells for $6.