A lead-acid battery is a battery whose electrode is mainly made of lead and its oxide. The electrolyte is a sulfuric acid solution, which is divided into a vented battery and a maintenance-free lead-acid battery. In the discharge state, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the state of charge, the main components of the positive and negative electrodes are lead sulfate. The battery is mainly composed of a tubular positive plate, a negative plate, an electrolyte, a separator, a battery tank, a battery cover, a pole, a liquid injection cover and the like. The electrode of the vented battery is composed of an oxide of lead and lead, and the electrolyte is an aqueous solution of sulfuric acid. The main advantage is that the voltage is stable and the price is cheap; the disadvantage is that the specific energy is low (that is, the energy stored per kilogram of the battery), the service life is short, and the daily maintenance is frequent. Old-fashioned ordinary batteries generally have a life span of about 2 years, and it is necessary to regularly check the height of the electrolyte and add distilled water. However, with the development of technology, the life of lead-acid batteries has become longer and the maintenance is simpler.
Test standards: GB/T 19638, IEC 60896, EN 60896, YD/T 799, GB/T 19639, IEC 61056, EN 61056