作為老司機的車主朋友們來說，汽車蓄電池報廢后多數會有想自己更換電池的想法，但是在購買蓄電池時不僅要注意蓄電池必須符合尺寸，還要看清蓄電池的容量和啟動電流兩個數值是否適合汽車啟動的要求。建議一般要選用兩個數值大于等于原車蓄電池的數值為佳。在購買汽車蓄電池時，光看是不行的，還要用專用電腦來看是電池參數是否合格，特別是蓄電池的電量是否足夠。

汽車蓄(xu)電池(chi)里面一(yi)共有6格，每一(yi)格2伏(fu)(fu)，總共是(shi)12V。剛好是(shi)12伏(fu)(fu)就沒問(wen)題，少一(yi)伏(fu)(fu)都(dou)不行，因為(wei)只要壞了一(yi)格，這個蓄(xu)電池(chi)就不能用了。

還有一個(ge)很重要的(de)事情，就是不(bu)要買存放了太久的(de)蓄電池，最好不(bu)要超過6個(ge)月(yue)的(de)時間。

選(xuan)擇和使用汽車(che)蓄電池方法：

1、不(bu)要隨便給汽車更換比原電(dian)(dian)(dian)池容量大的蓄電(dian)(dian)(dian)池。因為汽車發電(dian)(dian)(dian)機的發電(dian)(dian)(dian)量是固定的。如換了容量大的蓄電(dian)(dian)(dian)池，會(hui)使(shi)新蓄電(dian)(dian)(dian)池充不(bu)足電(dian)(dian)(dian)，汽車不(bu)能順(shun)利(li)啟動，而且蓄電(dian)(dian)(dian)池長期(qi)虧(kui)電(dian)(dian)(dian)會(hui)縮(suo)短壽命。

2、啟動(dong)汽車時(shi)每次(ci)啟動(dong)時(shi)間(jian)(jian)不(bu)應超過3至5秒(miao)，再次(ci)啟動(dong)間(jian)(jian)隔時(shi)間(jian)(jian)不(bu)少(shao)于15秒(miao)。

3、買蓄電池時看(kan)清(qing)上面的(de)字(zi)母(mu)，凡帶有QA字(zi)母(mu)的(de)為(wei)干荷式(shi)蓄電池。

4、先將(jiang)電(dian)解(jie)液搖勻(yun)再向蓄電(dian)池(chi)中添加。操作時請戴手套，注(zhu)意不要將(jiang)電(dian)解(jie)液灑在手上(shang)或(huo)衣服上(shang)。

5、如果車輛長(chang)期放置(zhi)不用，每隔25天應將(jiang)汽車發動(dong)起來，中(zhong)等(deng)轉速(su)運行20分(fen)鐘(zhong)左右。否則，汽車放置(zhi)時間太(tai)長(chang)，將(jiang)難以啟動(dong)。

6、加電(dian)解液(ye)時不(bu)要讓其他物品掉(diao)進蓄電(dian)池(chi)內。如有東(dong)西不(bu)慎(shen)掉(diao)入(ru)，千萬不(bu)能(neng)用(yong)(yong)金屬物質去撈，應用(yong)(yong)木棒夾出雜(za)質；如用(yong)(yong)鐵絲或(huo)銅絲去撈，金屬分子(zi)會在硫酸的腐蝕下進入(ru)蓄電(dian)池(chi)形(xing)成自放電(dian)，損(sun)壞蓄電(dian)池(chi)。

7、定期檢查(cha)蓄(xu)電(dian)池(chi)(chi)蓋上(shang)的小孔是否通氣。倘若小孔被(bei)堵，產(chan)生的氣體就排不出去，電(dian)解液膨脹時會把蓄(xu)電(dian)池(chi)(chi)外殼撐破，從而減少蓄(xu)電(dian)池(chi)(chi)的壽命。

8、定(ding)期檢查電解液的液面高度(du)，液面高度(du)下(xia)降時(shi)及(ji)時(shi)添加電解液。

9、沒(mei)有(you)標(biao)志線(xian)的蓄(xu)電池，電解液高過極(ji)板10至15毫米即可；有(you)兩(liang)條紅線(xian)的蓄(xu)電池，電解液不得超過上紅線(xian)。

有人認為電(dian)(dian)(dian)(dian)解液(ye)越(yue)多電(dian)(dian)(dian)(dian)量越(yue)大(da)(da)，這是錯誤的想法。汽(qi)車(che)在高速行駛(shi)時(shi)，發電(dian)(dian)(dian)(dian)機輸(shu)出電(dian)(dian)(dian)(dian)壓大(da)(da)于蓄(xu)電(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)壓，開始給蓄(xu)電(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)。充電(dian)(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)(dian)解液(ye)體(ti)積膨脹，如果電(dian)(dian)(dian)(dian)解液(ye)太滿會從蓄(xu)電(dian)(dian)(dian)(dian)池(chi)蓋小孔中溢出。電(dian)(dian)(dian)(dian)解液(ye)導電(dian)(dian)(dian)(dian)，一(yi)旦流到蓄(xu)電(dian)(dian)(dian)(dian)池(chi)正、負兩極(ji)之(zhi)間，就(jiu)會形成回(hui)路自放電(dian)(dian)(dian)(dian)。汽(qi)車(che)不能啟動，并使蓄(xu)電(dian)(dian)(dian)(dian)池(chi)壽命縮短。遇(yu)此情況就(jiu)應(ying)用(yong)棉絲將電(dian)(dian)(dian)(dian)解液(ye)擦(ca)掉(diao)，或用(yong)開水沖洗擦(ca)凈。

10、將蓄(xu)電(dian)池(chi)(chi)(chi)從汽車上拆(chai)下時(shi)，應先拆(chai)負極再拆(chai)正(zheng)(zheng)極，裝時(shi)與此相反。充電(dian)時(shi)一定要把蓄(xu)電(dian)池(chi)(chi)(chi)蓋擰下，不能(neng)用(yong)明火接近正(zheng)(zheng)在充電(dian)的蓄(xu)電(dian)池(chi)(chi)(chi)口，因為充電(dian)時(shi)蓄(xu)電(dian)池(chi)(chi)(chi)內產生的氫氣很容易爆燃。

看完上面(mian)的介(jie)紹你是否了解汽車(che)蓄(xu)(xu)(xu)電(dian)池容量選擇技巧(qiao)了呢。車(che)用蓄(xu)(xu)(xu)電(dian)池大多(duo)是干荷式蓄(xu)(xu)(xu)電(dian)池。其優點是添加(jia)電(dian)解液后不(bu)充電(dian)，30至40分鐘(zhong)之后也可(ke)啟動。一些車(che)主不(bu)理解干荷式蓄(xu)(xu)(xu)電(dian)池的工作(zuo)原(yuan)理，不(bu)會維護(hu)，使蓄(xu)(xu)(xu)電(dian)池壽命大為(wei)縮短。