The battery used in the general car is a lead-acid battery. Common lead-acid batteries have 2 classes, one is a water-based lead-acid battery, and the other is a maintenance-free lead-acid battery.
Water-saving lead-acid battery: The polar plate of the ordinary battery is made of the oxide of lead and lead, and the electrolyte is an aqueous solution of sulfuric acid. Its main advantage is that the voltage is stable, the price is cheap; the disadvantage is that the battery is low (that is, the battery stored per kilogram of battery), the service life is short and frequent in daily maintenance.
Maintenance-free lead-acid battery: maintenance-free battery due to its own structure, the consumption of the electrolyte is very small, basically no need to supplement distilled water during service life. It also has the characteristics of high temperature resistance, high temperature, small size and small discharge. The service life is generally twice the ordinary battery. There are two maintenance-free batteries on the market: the first one is not needed in use after purchasing (adding a supplement); the other is that the battery itself is shipped with the electrolyte and sealed The user cannot add a supplement at all.
Article from: http://www.brcpower.com/
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