Charging Speed: Information about the charging speed, often measured in watts. A 30W charger typically supports relatively fast charging. Compatibility: Ensure that the fast charger is compatible with your devices. It may support various charging protocols such as Qualcomm Quick Charge or USB Power Delivery. Connectivity: Check the type of connector the charger uses (e.g., USB Type-A, USB Type-C) and make sure it matches your device. Safety Features: Look for features like over-current protection, over-voltage protection, and temperature control to ensure safe charging. Build Quality: Consider the build quality and materials used in the construction of the charger.