Bests & Worsts Reviews from Amazon

Ran for 9 HOURS on batteries !!! I got two of these units for an outdoor event. I brought a bunch of D batteries assuming this thing was just going to blow through them ( no fan could run for 8 hours, right ?! ). I initially did what the directions said and ran both fans on low, but within 30 minutes of turning them on, my wife set them on High. We were under a popup tent for an event, on a concrete street in 95 degrees Florida heat. After a few hours, we just forgot they were running on batteries, and random people were popping in our tent to steal some air from our fan ( ha ha ). Then at the end of the event, I realized we never switched the batteries, and these freaking fans had run non-stop for NINE HOURS. Both of them, without flaw. Needless to say, these are going with us from now on. I am super impressed, even more so by what happened the next day. So we got these units home and I took the batteries out of them and ended up putting one next to my bed to run at night since they had a nice breeze. I had this fan plugged in. Around 10 AM the power went out because of a storm, but this fan kept on running for 5 minutes. I was confused since the batteries were out, and I had no idea how the fan could still be running. Turns out the fan is so efficient that it was literally running off the stored charge in the capacitor in the power brick that the unit uses for power. I honestly can't get over how impressive that is. NO BATTERIES. NO POWER. And the thing still ran for 5 minutes just off the stored charge in the power brick that was plugged into the outlet... even though everything else in my house was dead !!!