In simple terms, a portable outdoor power station functions like a compact "charging station" you can take anywhere. Inside, it houses a battery bank (aka a lithium-ion battery pack) where electrical energy can be stored. This "charging station" also features a smart manager (Battery Management System or BMS) that keeps a constant eye on the batteries. Its job is to ensure they stay well-fed (ample charging), avoid overindulging (prevent overcharging), and sound the alarm if they're starving (prevent excessive discharge) or if there's any danger.
When your gadgets like smartphones or tablets need a recharge, the converter inside the "charging station" comes into play. It transforms the low voltage output from the battery bank into the 5-volt DC power suitable for these devices. For devices requiring higher voltage or AC power, such as laptops or small fans, an inverter is employed. This nifty device can "transform" the DC power into the commonly used AC power for household appliances.
In a nutshell, once you charge your portable outdoor power station, it becomes your on-the-go power support for various electronic devices. It's particularly handy for outdoor adventures, camping, or emergency situations, making it a highly practical solution for mobile power needs.