Portable power sources are devices that provide electricity on the go, allowing users to charge or power electronic devices without needing a traditional outlet. Common types include power banks, solar chargers, and portable generators. These sources are especially useful for outdoor activities, travel, or during power outages. Many portable power sources are designed to be lightweight and compact, making them easy to carry. They often come with various output options, such as USB ports or AC outlets, to accommodate different devices like smartphones, laptops, and cameras. This versatility makes them essential for anyone needing reliable power away from home.