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　　No gas and no electricity while driving is undoubtedly the most embarrassing thing. If there is no gas, you can use spare oil or go to the gas station to refuel, but no electricity can only wait to be towed or rescued. Since most car owners usually don't pay attention to auto batteries, the problems caused by batteries are not uncommon, so we still remind everyone to pay attention to them.

　　Auto batteries type

　　The main function of the vehicle battery is to start the engine and supply power to the entire vehicle's electrical equipment at low engine speeds. The requirements for automotive batteries are: large capacity, low internal resistance, and sufficient starting ability. Auto batteries include wet-charged batteries, dry-charged batteries, low-maintenance batteries and maintenance-free batteries. Modern cars basically use maintenance-free batteries.

　　Most of the early batteries were ordinary lead-acid batteries, which required regular addition of electrolyte (distilled water), but the price was relatively cheap. With the maturity of technology, maintenance-free batteries that are more convenient to use are becoming more and more popular, but the price is relatively low. Rose a lot.

　　Lead-acid batteries are composed of positive and negative plates, separators, shells, electrolyte and terminal posts. The chemical reaction of its discharge is dependent on the active material of the positive plate and the negative plate active material in the electrolyte (dilute sulfuric acid solution). Next, the grid of the pole plate is made of lead-antimony alloy. The phenomenon of liquid reduction occurs in traditional batteries during use. This is because the antimony on the grid will contaminate the lead on the negative plate, causing excessive decomposition of water, and a large amount of oxygen and hydrogen will escape from the positive and negative plates, causing electrolysis. The fluid is reduced.