What is full charged?
With charging voltage 4.2V, current 0.2C continued to charge the battery pack
EV battery
How to test the quality of lead-acid batteries?
by：Vglory
2021-03-12
How to detect the quality of lead-acid batteries. Lead-acid batteries for car start-ups are something that people often use in daily life. Sometimes they can’t catch fire. Go to a repair 4S shop. They usually recommend you to replace them with new ones. Actually it is not necessary. 1. First of all, you should check the battery's electric eye according to the description of the electric eye. Generally speaking, green is good, red is bad, and white or black is to charge or add electrolyte. This depends on the density of the electric eye. What color is usually stated on the description. 2. The second is to charge the battery. Generally, it can be restored to about 80% of the new battery's capacity after a one-time charge of about 8 hours, and you can continue to use it. 3. After charging, if you can’t catch fire, you need to use a detector. If the discharge voltage does not reach 8 volts, it means that there is a problem with the battery, because you are a newly charged battery. There is a power deficit. 4. Next, use the discharge meter to continue monitoring, turn on the cell of the battery, press the discharge button, if any cell has continuous bubbles, then that cell is damaged and record it. 5. Then use a densitometer to test the density of each cell. If the density of a cell is quite different from other cells, then the cell is damaged. In both cases, the cell must be replaced. If you are not a professional, it is recommended that you replace the battery or ask a professional to repair it. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it.
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