How far can an electric vehicle travel with batteries of 60V 55Ah, 60V 110Ah, and 72V 55Ah on a 650W power motor?

Blog post description.

7/20/20231 min read

The driving range of an electric vehicle is related to the motor power, speed, battery energy, and driving environment factors. Therefore, we only calculate the distance traveled by an electric vehicle at its rated power and constant speed.

Capacity ÷ Current = Time

Time × Speed = Theoretical Range

Driving Range S = V × W ÷ P = Speed × Energy ÷ Motor Power

Let’s take an example of an electric vehicle with a universal 60V/72V system, a motor power of 650W, and a rated speed of 45km/h:

① Equipped with a 60V 55Ah battery

Driving Range = 45 × 60 × 55 ÷ 650 = 228km (theoretical range)

650W ÷ 60V = 10.83A, 55Ah ÷ 10.83A ≈ 5 hours, 5 hours × 45km/h = 225km

② Equipped with a 60V 110Ah battery

Driving Range = 45 × 60 × 110 ÷ 650 = 456km (theoretical range)

650W ÷ 60V = 10.83A, 110Ah ÷ 10.83A ≈ 10 hours, 10 hours × 45km/h = 450km

③ Equipped with a 72V 55Ah battery

Driving Range = 45 × 72 × 55 ÷ 650 = 274km (theoretical range)

650W ÷ 72V = 9A, 55Ah ÷ 9A ≈ 6.1 hours, 6.1 hours × 45km/h = 274km

Note: Due to different configurations by electric vehicle manufacturers, the actual range during road tests is typically around 65%-85% of the theoretical range. There can be significant differences in range between non-standard, exaggerated, or lower-quality vehicles and professional lithium electric vehicles. Professional lithium electric vehicles have controllers, motors, tires, and other components that are carefully matched, saving energy and improving battery conversion efficiency.