How much does the battery of an electric vehicle discharge to be a normal battery?

The 48V battery is composed of four batteries connected in series. As far as a battery is concerned, it is composed of six cells, of which the cell voltage is 2. 1V, forming a voltage of12.6v. When discharged with a discharge meter, the cell voltage is not lower than 1.7V, that is, the voltage of 10.2. If one of the four bottles is lower than 10.2 volts or lower when the discharge meter discharges, it means that there is something wrong with that bottle.

The service life of lead-acid battery is defined as the battery capacity decays to 30% of the original capacity, which can be charged and discharged for about 300 times, and the service life is about one and a half years. If the riding distance is short, it can be used for about three years. Lithium batteries have strict charging times, about 1000- 1200 times, and their service life is about 3-5 years. However, lithium batteries and lead-acid batteries are completely opposite in charging, and they both need to be charged after exhaustion. When the battery is not used for a long time, it needs to be fully charged every two months to prevent battery protection and prolong battery life.

Because many people don't pay attention to battery maintenance when using electric vehicles. Neglecting battery maintenance may lead to the damage of electric vehicle batteries within the three-guarantee period (lead-acid batteries are generally 12 months). Therefore, the life of the two batteries will be different or even shorter.

Coiling method

1, check whether the product identification of electric vehicle battery is complete. Including the manufacturer's name, product specification and model, manufacturing date and trademark; Check whether the internal and external signs are consistent, especially whether the product itself has eye-catching signs and production dates. ?

2. Pay attention to the appearance of electric vehicle battery. Check for deformation, cracks, scratches and leakage marks. The battery terminals shall be clean and free from rust, and the signs shall be clear.

3. Pay attention to the rated capacity marked on the battery products of electric vehicles. The larger the rated capacity of the battery, the longer the battery discharge time. It is best not to buy batteries without rated capacity, but pay attention to whether they are special for electric vehicles.

4. Buy brand batteries from well-known enterprises and large enterprises. Batteries are generally provided by professional battery manufacturers. Different brands and manufacturers produce different batteries with different quality and different prices. Well-known large enterprises have large scale, strong technology, good after-sales service and guaranteed battery quality.

5. Choose an automatic control smart charger that matches the battery. A suitable charger can automatically adjust the charging size and time, which is beneficial to prolong the service life of the battery.