Battery operated fans are portable cooling devices that run on batteries instead of being plugged into an electrical outlet. They are designed for convenience, making them ideal for outdoor activities, camping, or during power outages. These fans come in various sizes and styles, from small personal fans to larger models that can cool a small room. Most battery operated fans use rechargeable or disposable batteries, allowing users to enjoy cool air without the need for a power source. Some models even feature additional functions, such as built-in LED lights or multiple speed settings, enhancing their usability in different situations.