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Electric vehicle batteries are the core componen […]
Electric vehicle batteries are the core components of electric vehicles, but electric vehicle batteries have a service life. At present, most electric vehicles on the market use lead-acid batteries, which can normally be used for more than one year. Users should determine whether to scrap according to the specific conditions and operating conditions of use. But under what circumstances do you need to replace the new battery? What are the symptoms before the battery is scrapped?
1. The actual discharge capacity of the battery is less than about 60% of the rated capacity, and those who cannot rise significantly after maintenance can be determined to be scrapped.
This is because during the use of the battery, the performance will greatly deteriorate after the capacity decays to about 60%, and each component will basically deteriorate. This attenuation tends to gradually accelerate, and it will soon completely lose its charge and discharge capabilities.
2. Whether the battery is charged or discharged, its casing is extremely hot.
The cause of fever is that the active material on the electrode plate is severely shed, the internal resistance is increased, and the heat generation is increased. At this time, if you open the battery safety valve for inspection, you will see that the electrolyte "blackens" and cannot be repaired if it fails severely. At this time, the battery self-discharges quickly and sometimes runs out of power soon after charging.
3. It will be fully charged in tens of minutes after charging, and it will run out in less than a few hours.
At this time, you need to change the battery again, and try to choose high-quality brand batteries when choosing the battery.
In general, the service life of a battery with a large discharge depth is about one year; the battery life with a discharge depth of 50% -70% is about one and a half years; the battery produced by individual manufacturers can reach more than two years. When the battery shows the above symptoms, it means that the battery life is over and it is time to replace it.