Why can't batteries of electric vehicles be used up and recharged?

Recently, many users asked me for help. Why do I not charge all the batteries of EV Batteries? For this problem, as a car repair master, today to give you a detailed answer.

First of all, it is important to understand that if the electric vehicle battery all used up and recharged, equivalent to a deep discharge of the battery, will accelerate the battery loss. And a long time of deep discharge, will cause the battery plate and sulfuric acid reaction to form crystallization, that is, we have long said the sulfurization phenomenon. And vulcanization is basically difficult to repair, even mild vulcanization will greatly reduce the life of electric vehicle batteries, shorten their endurance. In addition, severe vulcanization will directly lead to battery scrapping. Therefore, from this point of view, electric vehicle batteries can not be used up and recharged.

Secondly, due to the different balance of the battery, it means that there is a certain error in the discharge time between the same group of single cells, although this error is small, but also can not be ignored, which will lead to battery power shortage when the voltage difference. If the battery is used up and recharged for a long time, the voltage differential will become larger and larger, resulting in shorter service life of electric vehicles, a single battery backward situation. Therefore, from this point of view, electric vehicle batteries can not be used up and recharged.

Finally, if all the batteries in the electric car are used up and recharged, it will be easier to pull the battery and reduce its lifetime after a long period of operation. Therefore, from this point of view, electric vehicle batteries can not be used up and recharged.
In short,electric vehicle batteries can not be all used up and recharged, because this is not conducive to the extension of battery life of electric vehicles. So does this mean that the batteries of electric vehicles need to be filled with them? Of course not, the correct way is when the use of electric vehicles to close to 30% of the electricity, timely replenishment of electricity, can effectively extend the battery life of electric vehicles, increase its endurance. In addition, there are several points to remind: do not mix electric vehicle chargers; try to control the charging time within 8 hours.