Although electric cargo bikes are a daily means of transportation and most people can ride them, when it comes to electric vehicle maintenance, I believe many cargo bike owners are not very familiar with it. For example, what is the reason why electric vehicles cannot run far? How to charge an electric vehicle correctly? What type of battery should be replaced after the electric vehicle battery is damaged? These are common problems that occur in electric vehicles. Below are three rumors that I believe many cargo bike owners have heard.

1.The battery can be restored after ‘add water’

The most important component of electric vehicles is the battery, the most common being lead-acid batteries. Although it is important, it is also easily damaged. Ordinary lead-acid batteries cannot run far in a year or two, and improper daily use can also reduce battery life. For this reason, some people may say that the reason why the battery cannot run far is due to “water shortage”, and as long as “water replenishment” is done, it can restore battery life.

Myth refutation: “Replenishing water” in batteries can play a certain role in specific situations, such as long-term high-temperature charging, immediate charging after riding, and long-term charging without unplugging, which will accelerate the evaporation of electrolyte moisture. At this point, replenishing water can restore battery life, but it cannot fully recover.

If you are using it normally, the evaporation of the electrolyte within 2 years will not affect the battery life. At this time, the durability of the battery is the reason for aging. Forcible water replenishment not only will not restore the battery life, but also accelerate the battery scrapping.

2.Newly purchased electric vehicles need to be fully charged for 24 hours

Many people heard that in the past, new mobile phones needed to be fully charged for a long time for the first time, otherwise it would affect the battery life. So many people also have this idea when charging electric vehicles. Newly purchased electric vehicles need to be fully charged for 24 hours or longer for the first time, so that the battery can have memory.

Myth refutation: Why is there a long requirement for a first charge? Because there used to be a nickel battery, the most obvious feature of this battery is that it has a memory effect, that is, it can remember the nodes charged and discharged last time, so as to create a limit of available capacity. But nowadays, both mobile phones and electric vehicles no longer use such batteries.

At present, lead-acid batteries and lithium-ion batteries are common in electric vehicles. These two types of batteries do not have the so-called memory effect, so there is no need to deliberately extend the time when charging. They can be unplugged within one hour after the green light. On the contrary, if charged for a long time, it will also cause the battery to charge up, affecting the range.

3.After charging the battery, it will catch fire and explode

When it comes to batteries, many people feel that they pose certain risks, especially with the increasing popularity of electric vehicles today. Many people can see news of electric vehicles catching fire or exploding, some of which are during charging. So some people believe that the electric vehicle battery will catch fire and explode after battery drum.

Myth refutation: Lead acid batteries and lithium batteries are the most common, and there is a risk of fire and explosion in lithium batteries. This is indeed good, and it is also mentioned in various news articles. The reason why lead-acid batteries experience bulging is because the gas generated by internal reactions is not discharged in a timely manner, leading to battery swelling. Moreover, the lead plate and electrolyte are not organic, and the generated hydrogen gas cannot reach the ignition point.

As for some car owners who see lead-acid battery electric vehicles catching fire, the main reason is a short circuit in the circuit, rather than the battery catching fire, and there are currently no cases of lead-acid battery catching fire. So, if you want to be safer in the future, lead-acid batteries are still the first choice.


Although batteries are important, they are also the most vulnerable component, and the rumors mentioned above are all aimed at batteries. To be honest, the normal use of electric vehicle batteries will not have too many problems. Only common incorrect charging methods can lead to a decrease in battery life and endurance, such as overcharging in a day, prolonged charging without unplugging, high-temperature charging, and recharging after use. So, cargo bike owners should try to pay attention to the charging method in the future to reduce damage to the battery.