Is an essential part of car battery, according to the market varieties of existing storage battery can be roughly divided into two kinds: traditional lead-acid battery and just in the domestic popularity in recent years the use of free WeiHuXing battery. Lead-acid battery is made up of positive and negative plate, plate, shell, electrolyte and wiring and other components of the pile head, the discharge of chemical reactions is depend on the positive plate living substance and negative plate live * * * * in the electrolyte (dilute sulphuric acid solution), under the action of the plate of the gate frame is made of lead antimony alloy. For traditional battery will happen in the process of using fluid phenomenon, this is due to the gate of antimony on the shelf will lead pollution on the negative plate, excessive water decomposition, a large number of oxygen and hydrogen escape from the positive and negative plates respectively, reduce the electrolyte.
　　Maintenance-free battery is made of lead calcium alloy, because the battery USES lead calcium alloy for grid frame, less so when the charging water decomposition, moisture evaporation is also low, coupled with the outer seal structure, the release of acid gas is very few, so it is compared with the traditional battery, do not need to add any liquid, less corrosion of wiring pile head, electrical, and body, overcharge resistance is strong, large starting current, power advantages of long storage time, is very popular in domestic in recent years.
　　The following is the battery is in use and maintenance aspects need to pay attention to some problems.
　　1, battery don't have to for a long time, it will slowly discharge by oneself, to scrap. At regular intervals, therefore, should start a car, for battery charging. Another way is pulled down the two electrodes on the battery, unplug from the electrode column that should pay attention to both positive and negative electrode thread, to remove the negative line first, or remove negative and chassis connections. Then pull with the positive sign (+), on the other side of the battery service life to a certain extent, to a certain period has to be replaced. When replacement should follow the same order, but in the up electrode wire, order, by contrast, take the positive first, and then connect the cathode.
　　2, when the ammeter pointer display storage capacity is insufficient, the charge in time. Battery storage capacity can be reflected in the dashboard. Sometimes found that power is not enough in the way, the engine stalled again won't start, as a temporary measure, can seek help from other vehicles, vehicle battery with them to launch vehicle, connected the two battery anode and the cathode, positive
Anode and cathode.
　　3, the density of the electrolyte should according to different regions, different season, according to the standards for the corresponding adjustment.
　　4, when loss of electrolyte adding distilled water or dedicated rehydration. Drink pure water instead of avoid by all means. Because water is contained in a variety of trace elements, the battery can cause bad influence.
　　5, when starting car, uninterrupted use the chance to lead to battery damage due to excessive discharge. Every time the use of the correct way is to launch a car in the total length of not more than 5 seconds, restart time interval is not less than 15 seconds. In the case of start many times still no car from circuit, ignition coil, or oil, and other aspects to find reasons.
　　6, daily route should be regularly check whether the battery cover holes. If the battery cover holes blocked, produce hydrogen and oxygen to row out of the electrolyte expands, the battery shell burst, affect battery life.
　　7 grades, check the battery positive and negative sign of oxidized. Can use the hot water often watering the wire connection of the battery.