Many buyers choose leisure electric tricycles only by price and appearance, ignoring critical parameter matching, which leads to insufficient range and weak climbing in real use. This article provides scientific selection advice based on common vehicle specifications. First, the battery: lead-acid batteries are cheap with mature recycling, but have low energy density and obvious range loss in winter; lithium batteries are lighter, have longer cycle life and support fast charging, better for frequent-use scenarios. Second, the motor: rated power determines climbing and load capacity. Flat-terrain commuting may choose 500W-800W, while hilly areas or frequent climbing call for 1000W or above. Finally, range calculation: actual range is affected by load, road conditions, tire pressure and temperature, typically 70%-80% of the nominal value; leave at least 20% margin for daily needs. Buyers should also verify whole-vehicle CCC certification, braking and lighting configuration, and avoid non-compliant generic models.