What are the important categories of lead-acid batteries?

Lead-acid batteries are mainly divided into three categories: 1) Ordinary batteries; the plates of ordinary batteries are composed of lead and lead oxides, and the electrolyte is an aqueous solution of sulfuric acid. Its important advantages are stable voltage and low price; disadvantages are low specific energy (that is, the electric energy stored per kilogram of battery), short service life and frequent routine maintenance. 2) Dry-charged battery: its full name is dry-charged lead-acid battery. Its important feature is that the negative plate has a high storage capacity of 2V lead-acid battery. In a completely dry state, it can be stored within two years. When using, just add electrolyte and wait for 2030 minutes to use. 3) Maintenance-free storage battery: Due to its structural advantages, the maintenance-free storage battery consumes very little electrolyte, so do not add distilled water during the service life. It also has the characteristics of shock resistance, high temperature resistance, small size and small self-discharge. The service life is generally twice that of ordinary batteries. There are also two types of maintenance-free batteries on the market: the first is to add electrolyte once at the time of purchase, and then do not maintain it during use (add supplementary fluid); the other is that the battery itself has been filled with electrolyte and sealed when it leaves the factory. The user cannot add refill at all. Dry batteries are relative to wet batteries (liquid batteries). The earliest invented voltaic battery is to place two metals in the same electrolyte as electrodes. Lead-acid batteries that are still in use today also belong to this type of wet battery. Because the liquid is inconvenient to use and carry, people later invented dry batteries. The principle is the same, except that the electrolyte solution is replaced by a paste-like electrolyte, and it is sealed in a zinc bucket (the zinc bucket is used as the negative electrode, and the middle copper and carbon rods To make the positive electrode, the paste-like electrolyte is filled between the positive and negative electrodes), so that the electrolyte will not flow out and is convenient to use and carry, so it is called a dry battery statement: Some pictures and content of the articles published on this site are from the Internet, such as If there is any infringement, please contact to delete the previous one: How to repair the battery?