When evaluating an electric cargo trolley, you must prioritize the Load Capacity, typically ranging from 300kg to 1500kg for industrial use. Ensure the Motor Power (measured in Watts, e.g., 500W to 1200W) is sufficient for the intended terrain, especially if navigating inclines. Additionally, check the Battery Type; Lithium-ion batteries offer longer lifecycles and faster charging compared to traditional Lead-acid variants. Finally, verify the Braking System, prioritizing Electromagnetic brakes for enhanced safety on slopes.