Buyers should prioritize battery capacity and type (e.g., Lithium-ion vs. Lead-acid), as this dictates runtime and lifespan. For remote-controlled models, ensure 2.4GHz frequency technology to prevent signal interference. Pay close attention to the motor type (brushless motors offer higher efficiency and durability) and scale accuracy (1:10, 1:14, or 1:24) to meet specific market demands. Additionally, verify the charging interface (USB-C is now the global standard) and charging protection circuits to prevent overheating.