Batteries have become an important part of the telecommunication power system

Maintenance-free storage battery: Due to its structural advantages, the maintenance-free storage battery consumes very little electrolyte and basically does not need to be supplemented with distilled water during its 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 that the electrolyte is added once at the time of purchase, and there is no need to maintain it during use (addition of 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.　　Ordinary storage battery; The plate of the ordinary storage battery is made of lead and lead oxide, and the electrolyte is an aqueous solution of sulfuric acid. Its main 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. Dry-charged battery: Its full name is dry-charged lead-acid battery. Its main feature is that the negative plate has a high power storage capacity. In a completely dry state, it can save the obtained power within two years. Just add electrolyte and wait for 20-30 minutes to use.　　 Batteries have been quickly promoted due to their small size, large volume ratio, no pollution, no need to add water during use, and relatively simple maintenance. Batteries have become an important part of the telecommunication power system.
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