Review on 4400MAh Battery Operated Camping Fan LED Lantern - Portable Mini Desk USB Rechargeable, 3 Speeds Silent Tent Fan For Home & Office by Jeremy Gaines

I use this kind of fan 24/7 in warmer weather, and this is a good one. The battery life is far better than most, and it moves a decent amount of air (the 4-inch ones are generally worthless). These fans also do fine running off a large capacity power bank, which is good since this one probably uses more power than some because of the light. The fan comes with a foam bit, which I've heard some people have tried using as a swamp cooler, but I don't know how well it might work. Overall, this is a fine fan with more features than most.