When the heat kicks in, the best battery-operated fans keep you cool with a long run time, strong airflow, and quiet operation. Run times vary from about two to 50 hours, and while batteries play a ...

When you want to stay cool but don’t have a convenient place to stash a fan, the best clip-on fans have a strong clip (whether its traditional, clamp-style, or a bendable tripod) to attach to just ...