The reduced range of an electric vehicle’s battery may not be the battery’s fault.
Release time：
2025-10-31
source：
Recently, we received an inquiry from a customer who purchased a 72V 54Ah battery pack. He reported that the battery, installed in a Jike IE4 scooter equipped with a 2000W motor, initially delivered a range of 120 km, but now falls short of 110 km—roughly a 10-km drop in range. The customer asked whether the issue might be with the battery itself. Upon receiving this query, our customer service team promptly requested the customer to provide screenshots from the app so that our technical engineers could assess whether the problem lay with the battery. After analysis, the engineers confirmed the battery was functioning normally; after all, it uses brand‑new, Grade‑A cells sourced from a reputable domestic manufacturer, ensuring reliable quality. The reduced range was therefore attributable to factors other than the battery. Haven’t you often encountered situations where an electric vehicle once managed 70–80 km on a single charge, only to see its range plummet to 30–40 km after some time? Today, let’s explore what other issues—beyond the natural capacity degradation of the battery—can lead to diminished range. When faced with such a problem, the first step is to determine whether the decline stems from the battery or from other causes. If the battery is intact, the most likely culprits are: 1. **Weather**: In winter, range typically drops by about 10%–15% compared to summer. This is due to the inherent performance characteristics of the battery and is perfectly normal; as temperatures rise, range will recover. 2. **Tire Pressure**: If tire pressure is too low, rolling resistance increases, subtly reducing range by roughly 10–20 km. Here’s a general guideline for recommended tire pressures: front tires should be between 2.0 and 2.5 bar, while rear tires should be between 2.5 and 3.0 bar.
3. To check the brakes, manually spin the wheels. If you notice significant resistance or uneven rotation, it’s likely that the brakes are too tight. Overly tight brakes can reduce your vehicle’s range by 10 to 15 kilometers.
4. Riding habits: Some riders prefer to modulate the brakes while riding, which can reduce the range. So when your e‑bike’s range starts to drop, breaking this habit can help restore it.
5. With prolonged use, the electric vehicle’s motor ages, leading to reduced energy conversion efficiency. Some kinetic energy is wasted, which in turn shortens the vehicle’s range. At this point, you can consider replacing the motor.
- First, address these few issues, and you’ll be able to resolve nearly 80% of the battery‑life degradation. For the rest, simply maintain the battery properly, aiming to extend its service life as much as possible.
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