What are the indicators of lead-acid batteries for electric vehicles?

What are the indicators of lead-acid batteries for electric vehicles? 1. Rated battery capacity: the battery capacity specified by national standards. The unit is expressed in Ah that is ampere hour, which reflects the size of the battery's stored power. The larger the value is, the more power is stored. The current capacity of electric vehicle batteries on the market is generally 10Ah, which is discharged at a constant current of 5A for 120 minutes. 2. The actual capacity of the battery: it reflects the actual storage capacity of the battery, and the unit is expressed in Ah ampere hour. Similarly, the greater the ampere hour, the greater the battery capacity, and the longer the range of the electric vehicle. During use, the actual capacity of the battery will gradually decay. The national standard stipulates that the actual capacity of the newly delivered battery is greater than the rated capacity as a qualified battery. For example, the batteries of electric bicycles on the market now require more than 2 hours (120 minutes) to discharge at a constant current of 5A, which is greater than (2 hours × 5A) 10Ah. It is equivalent to an electric car driving on a flat road for more than 2 hours. 3. Discharge cycle life: It refers to the number of cycles when the battery is charged and discharged until the battery capacity is reduced to 70% of the rated capacity. After fully charged, the battery is discharged to a certain depth as one cycle. The more the number of battery cycles, the longer the life, the cycle life of the electric bicycle battery is not less than 350 times, and the battery is unqualified if the cycle life is less than 350 times. As far as the electric bicycles on the market are concerned, under normal circumstances, they are used to go to and from get off work or to pick up children to school. They drive continuously for about 1 hour (about 25 kilometers) a day in the city, which is equivalent to about 180 battery cycles in a year. If it is a qualified battery, it can be used for nearly two years. At this time, the battery capacity is still 70% of the rated, which is equivalent to an electric vehicle that can continue to travel for 70 minutes, about 30 kilometers. 4. Rated battery voltage and battery pack working voltage: The battery voltage value specified by the national standard is the rated voltage, expressed in V volts. The voltage value of each cell of lead-acid batteries is 2V, and the electric vehicle batteries on the market are only 6V and 12V per cell. Each 6V battery is made up of 3 battery cells connected in series, and the 12V battery is made up of 6 battery cells connected in series. Most electric bicycles use 36V batteries, and 6 6V batteries or 3 12V batteries are connected in series to form a battery pack. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What are the failure situations of valve-regulated sealed lead-acid batteries?