Why are new electric car batteries less durable than original ones?
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2022/08/11 17:23:21
Many old users of electric vehicles have such a question, that is, under the same capacity state, the new battery of electric vehicles is generally not the original battery durable. So what's the reason? In fact, the causes of this phenomenon mainly have 5 points, the following to give you a detailed interpretation.
01 Motor aging problem
Accessories aging, matching decreased. Simply put, after the aging of the original battery, the other parts of the electric vehicle also appear to have different degrees of aging.
For example, the longer the motor is used, the inner magnet will decline. Once the motor is demagnetized, the speed and power of the electric vehicle will decline, the power consumption of the electric vehicle will increase, and the vehicle endurance will be shortened.
Even if the same battery is replaced with a new one, it will not be able to return to the operating condition of the new car. And at this time, if you just replace the battery, regardless of the motor, then there will be a new battery without the original battery durability problem.
02 New battery is cadmium-free
In the past, elements such as cadmium and arsenic were added to improve battery performance, which could also extend the range of electric cars. Today's batteries are designed to be cadmium-free in order to protect the environment, which will reduce battery performance.
Taking 48V20Ah battery and 400W motor as an example, if cadmium and other elements are added, the theoretical endurance of electric vehicles can reach 70-80km, while the theoretical endurance of cadmium-free design can only reach about 60km.
03 The battery is faulty
In addition, the third reason is that the new batteries are aftermarket batteries. Now some illegal businesses in order to obtain greater profits, in the user to replace the new battery, will use some after-sales battery.
It is often said that the turnover of batteries and maintenance batteries, and this kind of batteries are new battery problems, returned to the factory for maintenance and reuse of the battery.
Although these batteries look similar to new ones, they often only achieve 70 to 80 percent of the performance of the original battery.
04 The battery capacity is faulty
For example, the original battery is 48V20Ah battery, but when the user changes the battery, the replacement is 48V12Ah battery. Although both are 48V batteries, the difference in capacity will directly affect the endurance of electric vehicles.
And these two types of batteries, the theoretical battery life will often differ about 20 kilometers, so when you buy a battery, you must carefully check clearly, do not buy the same price but the capacity of the battery is insufficient.
The charger does not match the battery
Finally, the fifth reason is that the charger does not match the battery. Many users in the replacement of batteries, often do not go to replace the charger, and many times the charger itself has been aging.
If the original charger is used to charge the new battery at this time, it will accelerate the rate of water loss and reduce its life.
To sum up, the new battery of electric vehicles is not as durable as the original battery, which is generally caused by the aging of the motor or accessories, the design of the new battery, the battery belongs to the after-sales battery, the battery capacity is insufficient, and the charger does not match with the battery.
Therefore, for users, when replacing a new battery, in order to have a longer battery life, they need to do the following: try to choose a new brand of battery, choose a battery with a large capacity and replace a new charger, and need to carry out basic maintenance of other parts of the electric vehicle.
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