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。
如果以上(shang)條(tiao)件(jian)都符(fu)合，那(nei)么(me)這個充電(dian)器基本上(shang)可以放心購買。

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(qing)楚電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)車(che)充(chong)電(dian)(dian)(dian)(dian)(dian)器輸(shu)(shu)出(chu)(chu)(chu)的(de)(de)(de)(de)屬(shu)性。看(kan)看(kan)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)車(che)電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)接(jie)口(kou)是(shi)(shi)圓形(xing)(xing)還是(shi)(shi)品字形(xing)(xing)，因輸(shu)(shu)出(chu)(chu)(chu)插頭出(chu)(chu)(chu)來(lai)的(de)(de)(de)(de)是(shi)(shi)有(you)正(zheng)負(fu)極(ji)(ji)之分的(de)(de)(de)(de)直(zhi)流電(dian)(dian)(dian)(dian)(dian)，由于廠(chang)家(jia)不(bu)(bu)同，有(you)的(de)(de)(de)(de)品字形(xing)(xing)插頭正(zheng)負(fu)極(ji)(ji)不(bu)(bu)一樣。不(bu)(bu)過(guo)沒(mei)關系，有(you)一個(ge)很簡單的(de)(de)(de)(de)方法，就是(shi)(shi)拿(na)一只萬用(yong)表量一下電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)車(che)電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)接(jie)口(kou)，找(zhao)出(chu)(chu)(chu)哪個(ge)是(shi)(shi)正(zheng)極(ji)(ji)哪個(ge)是(shi)(shi)負(fu)極(ji)(ji)，只要電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)車(che)充(chong)電(dian)(dian)(dian)(dian)(dian)器輸(shu)(shu)出(chu)(chu)(chu)的(de)(de)(de)(de)跟電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)車(che)充(chong)電(dian)(dian)(dian)(dian)(dian)插口(kou)一致就可以了，即輸(shu)(shu)出(chu)(chu)(chu)的(de)(de)(de)(de)正(zheng)極(ji)(ji)對應電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)車(che)充(chong)電(dian)(dian)(dian)(dian)(dian)接(jie)口(kou)的(de)(de)(de)(de)正(zheng)極(ji)(ji)，輸(shu)(shu)出(chu)(chu)(chu)的(de)(de)(de)(de)負(fu)極(ji)(ji)對應電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)車(che)充(chong)電(dian)(dian)(dian)(dian)(dian)接(jie)口(kou)的(de)(de)(de)(de)負(fu)極(ji)(ji)，千萬不(bu)(bu)能搞反正(zheng)負(fu)極(ji)(ji)，不(bu)(bu)然會損(sun)壞充(chong)電(dian)(dian)(dian)(dian)(dian)器和(he)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(dian)(dian)器(qi)屬于較精密的(de)電(dian)(dian)子設(she)備，因此在使用中要注意防震動。盡量不(bu)要隨身攜帶，如(ru)確要攜帶，應將(jiang)充電(dian)(dian)器(qi)用減震材料包(bao)裝好后(hou)放置在車上工具箱(xiang)內(nei)。