A rechargeable standing fan, like the Bruhm 18″ model with a built-in lithium battery, provides non-stop cooling during those annoying power cuts. A person can charge the unit when the power is stable and then just run it on battery power to keep the air moving in a bedroom or office. Since the fan runs for many hours on lower speeds, it works perfectly for areas where outages happen all the time, which, let’s be honest, is a lifesaver on those hot nights.