如何才能選擇到好的充電器呢？
1.充電器殼子要堅實，電源線要比較粗，插頭部分要厚實。
2.相關的質量認證，比如3C、質量監督局的檢測合格號等
3.看充電器廠家名稱、聯系方式、出廠日期等，確定不是三無產品。
如(ru)果以上(shang)(shang)條件(jian)都符合，那么(me)這個(ge)充電器(qi)基本上(shang)(shang)可以放心購買(mai)。

其次，要選擇一個與自己愛車電池參數相符合的充電器。
1.要選擇合適的電氣參數，看是36V還是48V ，是12AH還是20AH。
2.要清楚自己車子使用的電池類型，現在市面上的電動車90%以上配套的都是鉛酸蓄電池，與其它類型的電池（如鋰電池）相比，雖然電氣參數可能相同，但不同的電池使用的是不同的充電器，不能混用。
3.要清楚電(dian)(dian)(dian)(dian)(dian)動車(che)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)輸(shu)(shu)出(chu)(chu)的(de)屬性。看(kan)看(kan)電(dian)(dian)(dian)(dian)(dian)動車(che)電(dian)(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)接口(kou)是(shi)(shi)(shi)圓形還是(shi)(shi)(shi)品字形，因輸(shu)(shu)出(chu)(chu)插(cha)頭出(chu)(chu)來的(de)是(shi)(shi)(shi)有(you)正負(fu)(fu)(fu)極(ji)(ji)之(zhi)分(fen)的(de)直流電(dian)(dian)(dian)(dian)(dian)，由于廠家不(bu)同，有(you)的(de)品字形插(cha)頭正負(fu)(fu)(fu)極(ji)(ji)不(bu)一(yi)(yi)樣(yang)。不(bu)過沒關系，有(you)一(yi)(yi)個(ge)很簡單的(de)方法，就是(shi)(shi)(shi)拿一(yi)(yi)只萬用表量一(yi)(yi)下電(dian)(dian)(dian)(dian)(dian)動車(che)電(dian)(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)接口(kou)，找(zhao)出(chu)(chu)哪(na)個(ge)是(shi)(shi)(shi)正極(ji)(ji)哪(na)個(ge)是(shi)(shi)(shi)負(fu)(fu)(fu)極(ji)(ji)，只要電(dian)(dian)(dian)(dian)(dian)動車(che)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)輸(shu)(shu)出(chu)(chu)的(de)跟電(dian)(dian)(dian)(dian)(dian)動車(che)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)插(cha)口(kou)一(yi)(yi)致就可以(yi)了，即輸(shu)(shu)出(chu)(chu)的(de)正極(ji)(ji)對(dui)應(ying)電(dian)(dian)(dian)(dian)(dian)動車(che)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)接口(kou)的(de)正極(ji)(ji)，輸(shu)(shu)出(chu)(chu)的(de)負(fu)(fu)(fu)極(ji)(ji)對(dui)應(ying)電(dian)(dian)(dian)(dian)(dian)動車(che)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)接口(kou)的(de)負(fu)(fu)(fu)極(ji)(ji)，千萬不(bu)能搞反正負(fu)(fu)(fu)極(ji)(ji)，不(bu)然會損壞充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)和電(dian)(dian)(dian)(dian)(dian)池。

那么，在選擇了一個對應的充電器之后，又該如何對它維護保養呢？
1.使用充電器對蓄電池充電時，請先插上充電器的輸出插頭，后插輸入插頭。充電時，充電器的電源指示燈顯示紅色，充電指示燈也顯示為紅色。充滿后，充電指示燈為綠色。停止充電時，請先拔下充電器的輸入插頭，后拔充電器的輸出插頭。
2.充電器在使用過程中需防潮防濕，因此要放置在通風良好的地方。充電器工作時有一定的溫升，請注意散熱，通常充電時間在7-8小時內，視電池的使用狀態而不同。
3.充電器(qi)屬于較精(jing)密的電子設(she)備，因此(ci)在使用(yong)中要注意防震動。盡量(liang)不要隨身攜帶，如確要攜帶，應將充電器(qi)用(yong)減震材(cai)料包裝好后放置在車(che)上工具箱內。