Walking on the street is always nerve-wracking, not because of cars but because of electric vehicles whizzing past you. When waiting at a red light, as soon as it turns green, groups of young high school students rush forward with all their might, as if racing their electric vehicles, nobody willing to fall behind. Seeing such scenes makes one sweat for them, while one cannot help sighing that youth is wonderful. But will electric vehicles really stay young and handy forever?

As we all know, electric vehicle batteries have their own cycle life, and many factors affect how long they last. If an electric vehicle is driven over the speed limit like those high school students, will it affect the battery?

A technician at an electric bicycle repair shop said that the vehicles he has repaired cover at least dozens of brands and hundreds of units; speeds above 20 km are common, and 40 or 50 km is nothing unusual. Online information shows that the technical threshold of the electric bicycle industry is low, and with some simple modification a vehicle can easily exceed 80 km per hour, matching cars. Such speeding seems to have become routine. However, the range, discharge rate and working current of electric vehicles all have corresponding standards, while the working current of a sped-up vehicle is far greater than the specified standard. When a battery stays in high-current discharge for a long time, it is greatly damaged. In high-current discharge, the supersaturation of lead sulfate at the solid-liquid interface is high, so more lead sulfate crystal precipitates form on the plates, and over time the grains grow coarse and turn into irreversible sulfate, making charging difficult. Lead also precipitates on the separator to form dendrites that create micro short circuits, and many microcrystals shed during charging. All of this damages the battery and, in severe cases, causes it to fail.

Xupai battery, a high-quality electric vehicle battery brand, reminds you: when riding an electric vehicle, please use it as required. On the one hand this makes the battery last longer and lets you go farther; on the other hand, riding within the speed limit is safer and greatly reduces the probability of traffic accidents. Never ride over the speed limit.