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Most electric vehicles are lead-acid batteries, and due to the deeper and shallower discharge, the number of cycles will significantly increase. Therefore, according to this theory, frequent charging is beneficial for cycle life, but for the chargers currently widely used in the market, due to factors such as price and technological level, chargers have defects such as high failure rate, poor reliability, and low accuracy. Therefore, sometimes frequent charging can actually affect the battery's lifespan. Discharging and recharging the battery may reduce the number of charges, but during discharge, there may always be differences between individual batteries, which may cause some individual cells to be over discharged. The charging capacity of over discharged batteries will be greatly reduced, leading to insufficient charging faults. In addition, due to discharging and recharging, the charger has a long heavy load time and is prone to damage. So it is more suitable to charge the electric vehicle battery once when it is discharged 60% -70%. Assuming that your car can ride 100 miles when fully charged, it must be charged after about 70 miles. If you ride 30 miles every day, charging every day is beneficial and harmless. If the battery has not been used for more than 30%, it will not be charged temporarily.

1. After continuously charging the battery for more than 10 hours, if the charger still does not turn on or the battery burns, the charging should be stopped immediately. Generally, the charging time of the battery should not exceed 8 hours.

2. The same type of electric vehicle is charged once a week by one person, and only needs to be charged when there is no battery. It has only been used about 260 times, and can only run one-third of the distance of the new car. And another person can charge as much as they need to go to and from work, and after using it for three years, they can still drive more than ten kilometers, which is the difference in charging control.

3. When an electric vehicle is not used for a long time, it should be fully charged and stored, and discharged and charged once a month.

4. After long-distance driving in summer, wait for half an hour before charging. Do not charge outdoors in sunlight, and try to charge indoors in winter.

5. Every time the battery is charged, it ends when the light changes, which can prevent vulcanization and extend the battery's lifespan.

1、 Charging sequence

When charging electric vehicle batteries, the charger output plug should be inserted into the battery charging socket first, and then the charger should be plugged in

Insert the head into the socket and observe the indicator light for charging identification (usually, a red light indicates charging, while a green light indicates that there is simply plenty of power. The more discharge, the longer the charging time).

2、 Charging time

The number of charging and discharging cycles of a battery is certain, usually around 600-800 times. Charging once is equivalent to losing the opportunity of charging and discharging once. Frequent charging of the battery means that it will greatly shorten its service life.

In the usual environment of using electric vehicles, it is advisable to charge the battery during the remaining 20% -30% of the battery life, which can not only suppress the early loss of battery capacity, but also prevent over discharge.

If you drive very little and haven't reached 60% -70% of the maximum range for a week, start charging once a week. If going out or not using it for a long time, it is recommended to replenish the battery once a month and store the electric vehicle in a cool and dry place.

3、 Charging duration

The charging time should be properly controlled within 8-10 hours, and should not exceed 8 hours in summer and 10 hours in winter. After the charger indicator light turns green, float charging for about 1-2 hours can suppress charging issues. Remember that the charging time cannot exceed 12 hours, as it can cause strain and damage to the battery, affecting its performance.

The normal lifespan of electric vehicle batteries nowadays is usually around three years, and the reason for premature end of lifespan is due to different charging customs. Accurate charging methods for electric vehicle batteries can not only provide a peaceful travel experience for oneself, but also prolong the lifespan of one's own batteries.

Firstly, it is important to understand that you are using a lead-acid battery with a electrolyte ratio of 1:1.3 (distilled water and sulfuric acid). When fully charged, all the sulfuric acid attached to the electrode plate runs into the water, resulting in the highest concentration of sulfuric acid in the water. After discharging, because the sulfuric acid in the water adheres to the positive and negative electrode plates, if you do not charge the sulfuric acid, it will slowly corrode the lead powder on the electrode plate, causing it to loosen and fall off from the grid of the electrode plate. If it falls between the two electrode plates, a short circuit will occur, and the more you charge, the worse it will become until it bulges.

The battery can be charged after about half of its usage, and battery manufacturers have a test curve for the impact of discharge periods on charging. For example, some lead-acid batteries can be charged up to 70% of their capacity to reach over 1500 uses, 50% up to a thousand uses, and then about 500 more uses.

Although the charging time is extended, it will reduce the oxidation and crystallization of the electrode plate. At the same time, the charging temperature is relatively low, and the negative effect on the battery is small. For example, the battery capacity is about 1c, which is 10% of the charging current, and it can be charged for about 13 hours. High power chargers can be used for fast charging when predicting time and emergencies, achieving the purpose of emergency use.

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