What are the commonly used charging methods for lead-acid batteries?

What is the commonly used charging method for lead-acid batteries? 1. The simple and economical method of pulse charging is to rectify the low-voltage AC output from the transformer secondary to pulsating DC (without filtering) to charge the battery. This method has large charging current and fast charging speed. The disadvantage is that when the grid voltage fluctuates, the charging current also fluctuates. It is easy to happen that the battery is damaged due to the large charging current, the increase of the battery temperature, and the large electrolyte loss. Therefore, this method is rarely used for maintenance-free sealed lead-acid batteries. 2. Charge with constant current in order to prevent too high temperature rise in the battery and too much electrolyte loss, the charging current is adjusted to be relatively small, and the charging time is longer. On the other hand, if the charging time is too long, overcharge will occur , In order to prevent damage to the battery due to overcharge, additional overcharge detection or on-time circuits are required. 3. Constant voltage charging theory and practice have proved that constant voltage charging is safe when the charging voltage is lower than the upper limit of the charging voltage (for 12V batteries, this value), even if the charging time is long, there is no danger. , The battery can also work in a floating charge state. The above are the commonly used lead-acid battery charging methods, but these two methods have some shortcomings. During the charging process, the battery voltage gradually increases and the charging current gradually decreases. 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: What are the differences between lithium battery UPS and battery UPS?