汽車蓄電池在出現故障之前，基本不會出現明顯的早期症狀，而其後果將直接導致發動機啟動不順暢甚至無法啟動，必須更換新蓄電池方可解決
般正規企業的蓄電池的設計壽命是24~27個月,但是，電池的實際壽命會因為使用情況不同有很大差距。如一般家用新車的電池很多都能用到3~4年而計程車則相應短得多，單班運行的計程車蓄電池能用一年多，雙班運行時則下降到10個月左右即使是私家車，第一塊電池正常使用耗損後，即使更換相同品質的新電池，使用時間也會比前一塊電池縮短，主要原因就是車輛其他相關總成性能下降，如啟動機、發電機等性能變化，導致耗電量增加而充電又不充分，縮短了蓄電池的壽命.
所以，想延長蓄電池的使用壽命，就要維持汽車整體性能良好，不過度放電，不使蓄電池經常處於虧電狀態。
汽車蓄電池的保養方法
汽車電瓶是汽車的易損件，隨著使用時間的增長，電瓶蓄電量也慢慢下降，最後只能更換了，但是平常注意保養電瓶能讓電瓶延長壽命，下面分享一些保養汽車電瓶的經驗
1、停車熄火前先滅燈、關音響.
行車結束後，準備熄火前一定要先關掉燈光、音響等，然後再熄火。這樣不會耗費電瓶的電量，特別是小燈、轉向燈等，下車後再檢查一番，不要忽略這一點，一旦燈光長時間開著，對電瓶非常不利。在夜晚開車時也要注意，先發動車輛再打開燈光、音響等。
2、避免熄火不關空調
空調耗電量很大，有些車主習慣熄火不關空調，這樣下次啟動車輛時，空調自動運轉，這時車輛瞬間功率負荷過高，時間長了會對電瓶造成損耗的
3、汽車每隔一段時間就要開一段路
不能長時間放置車輛不開，電瓶的電量慢慢減少，會導致汽車發動困難。即使車輛用不到，也要隔幾天開一次，讓電瓶充充電，保證電瓶始終處於滿電的狀態。但是汽車經常短途駕駛，開開停停，會導致汽車電瓶長期處於充電不足的狀態，縮短使用壽命。在高速公路上以穩定的速度行車20-30分鐘，可以給汽車電瓶充分的時間充電。
4、定期擦一擦電瓶。
用濕布定期把電瓶外部擦洗一下，把面板、正負兩個極頭的灰塵、油污、白色粉未等易造成漏電汙物擦拭乾淨。這樣經常擦洗電瓶，電瓶的極頭不會積過多白色的酸蝕粉末，而且其使用壽命會比較長。可以在電瓶兩個極頭上塗抹專用油脂以保護電瓶
5、防止電瓶虧電要防止蓄電池虧電，要特別注意在熄火狀態下不要長時間用車上的CD、點煙器等充電，這時候會消耗大量的電瓶電流。如果虧電很容易造成蓄電池的損壞。
6、半年檢查一次電瓶。為了讓電瓶保持最 佳的性能，最好每隔半年去4S店檢測檢測電瓶，看看蓄電能力如何。一般電瓶的壽命在3年左右，保養好的話能撐到4年。但是越往後越要縮短檢查電瓶的時間。
7、及時觀察電瓶狀態指示燈
現在很多車輛液晶顯示幕上都會有電瓶狀態指示燈，提示電瓶的使用情況，當電瓶出現電壓不足時，該指示燈會閃動提醒，就要仔細的檢查了，因此平常要關注好這個指示燈。
除了對汽車蓄電池的保養外，汽車蓄電池的使用也要注意，一些常見的做法也會傷害蓄電池，縮短使用壽命，比如:
①熄火狀態下長時間使用車內電器設備，這是很多車主在日常用車中經常遇到，也容易忽略的問題比如坐在車內等人時，一般習慣聽音響、聽廣播或者看DVD，為了省油駕駛者都會將發動機熄火，這樣做省油的目的是達到了，但卻容易造成蓄電池過度放電而損傷。建議車主在熄火狀態下連續聽廣播儘量不超過30min，同時不要在發動機熄火狀態下使用車載DVD等較大耗電量的設備。
②熄火狀態下使用外接電源設備
諸如車用吸塵機、可擕式充氣泵等。由於這些設備的功率都比較大，在熄火狀態下長時間使用很容易耗完蓄電池內的存電，從而影響到車輛的正常啟動。此外，類似這樣的“快速耗電”過程，對蓄電池本身也有傷害。
③停車後不關大燈
種情況是夜間停車忘記關閉車輛的大燈，這樣最終導致蓄電池徹底沒電。第二種情況則發生在晚間熄火等人的時候，忽略了大燈仍開著，此時由蓄電池單獨供電，耗電較大。正確做法是應及時將大燈調整到“示寬燈”模式，以保護蓄電池。
A car battery will not show obvious symptoms until it fails, but the consequences will directly lead to the engine not starting smoothly or even unable to start, and must be replaced by a new battery to solve the problem.
However, the actual life of a battery varies greatly depending on its use. For example, many batteries in new cars can be used for 3 to 4 years, while taxi is much shorter, single-shift operation of taxi batteries can be used for more than a year, double-shift operation is down to about 10 months even for private cars, the first battery after normal use wear and tear, even if replaced by a new battery of the same quality, the use of time will be shorter than the previous battery, the main reason is that other related to the total performance of the vehicle decreased, such as the starter, generator and other performance. The main reason for this is that the performance of the other components of the vehicle, such as the starter and generator, has changed, resulting in increased power consumption and insufficient charging, which shortens the life of the battery.
Therefore, in order to extend the life of the battery, it is necessary to maintain the overall performance of the vehicle and not to discharge the battery excessively, so that it is not constantly in a state of loss.
How to maintain a car battery
The battery is a wear and tear component of a car. As it is used for a longer period of time, the battery's storage capacity will slowly decline and eventually it will have to be replaced.
1. Turn off the lights and stereo before stopping the car.
When you are done driving, you should turn off the lights and stereo before you turn off the car. Don't ignore this point. Once the lights have been on for a long time, it is very bad for the battery. When driving at night, you should also be careful to start the car before turning on the lights and stereo.
2. Avoid turning off the engine without turning off the air conditioning
The air conditioner consumes a lot of electricity, and some car owners are used to turning off the engine without turning off the air conditioner, so that the next time you start the vehicle, the air conditioner will run automatically, and the instantaneous power load of the vehicle is too high, which will cause damage to the battery after a long time.
3, the car every time to drive a section of the road
You can't leave the vehicle unattended for long periods of time. The battery's power will slowly decrease, which will make it difficult to start the car. Even if the car is not used, it should be driven every few days to recharge the battery and ensure that it is always fully charged. However, if you drive your car for short distances and stop and go, the battery will remain undercharged for a long time, shortening its service life. Driving at a steady speed for 20-30 minutes on the motorway will give the car battery sufficient time to recharge.
4. Wipe the battery regularly.
Use a damp cloth to scrub the outside of the battery regularly, wiping away dust, oil, white powder and other pollutants that can cause leakage from the panel, positive and negative poles. If you scrub the battery regularly, the battery will not accumulate too much white acid-etching powder and it will last longer. You can apply special grease to the two battery tips to protect the battery.
5. To prevent the battery from losing power, pay special attention to not charging the CD and cigarette lighter on the car for long periods of time when the engine is off, as this will consume a lot of battery current. This will consume a lot of battery current. If the battery loses power, it will easily cause damage to the battery.
6. Check the battery once every six months. In order to keep the battery at its best, it is best to go to a 4S shop every six months to check the battery and see how well it can store electricity. Generally speaking, the life of a battery is about 3 years, and if it is well maintained, it can last up to 4 years. But the longer you go, the less time you need to check the battery.
7. Observe the battery status indicator in a timely manner
Many vehicles now have a battery status indicator on the LCD screen to indicate the battery's usage. When the battery is under-voltage, the indicator will flash to remind you to check it carefully.
In addition to the maintenance of the car battery, the use of the car battery should also be noted, some common practices will also harm the battery, shortening the service life, such as.
①This is a problem that many car owners often encounter in their daily use of the car, and is easy to ignore. For example, when sitting in the car waiting for someone, usually used to listen to the stereo, listen to the radio or watch DVD, in order to save fuel drivers will turn off the engine, the purpose of saving fuel is achieved, but it is easy to cause excessive discharge of the battery and damage. It is recommended that you do not listen to the radio continuously for more than 30 minutes with the engine off, and do not use DVDs or other large power-consuming devices when the engine is off.
② Use of external power equipment when the engine is switched off
Use external power supplies such as car vacuum cleaners and portable inflatable pumps. As these devices are relatively powerful, using them for long periods of time with the engine off can easily deplete the battery and affect the normal start-up of the vehicle. In addition, such a "fast drain" process is also harmful to the battery itself.
③Not turning off the headlights after stopping
The first scenario is when you forget to turn off the headlights after stopping at night, which eventually causes the battery to run out of charge. The second scenario occurs at night when the headlights are left on while waiting for someone to turn off the engine. The correct way to protect the battery is to switch the headlights to "wide light" mode in time.
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