目前充(chong)(chong)電(dian)(dian)(dian)(dian)器主要是三段(duan)(duan)(duan)式(shi)的，依次為(wei)(wei)恒(heng)流(liu)(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)、恒(heng)壓(ya)充(chong)(chong)電(dian)(dian)(dian)(dian)、浮充(chong)(chong)電(dian)(dian)(dian)(dian)三個階(jie)段(duan)(duan)(duan)，俗(su)稱三段(duan)(duan)(duan)式(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)器。開始(shi)(shi)用(yong)1.8安培充(chong)(chong)電(dian)(dian)(dian)(dian)，電(dian)(dian)(dian)(dian)壓(ya)逐(zhu)漸升(sheng)高，叫恒(heng)流(liu)(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)；電(dian)(dian)(dian)(dian)壓(ya)到了一(yi)(yi)定值叫恒(heng)壓(ya)，在40伏左右(you)，最高充(chong)(chong)到44伏左右(you)，這個階(jie)段(duan)(duan)(duan)恒(heng)壓(ya)；最后(hou)一(yi)(yi)段(duan)(duan)(duan)，電(dian)(dian)(dian)(dian)壓(ya)達到44伏的時候開始(shi)(shi)往下降(jiang)，降(jiang)到保(bao)底點41伏，這時從(cong)涓流(liu)(liu)開始(shi)(shi)充(chong)(chong)，用(yong)100毫安小電(dian)(dian)(dian)(dian)流(liu)(liu)慢慢充(chong)(chong)，最后(hou)一(yi)(yi)段(duan)(duan)(duan)主要是保(bao)障讓電(dian)(dian)(dian)(dian)池充(chong)(chong)足，同時不(bu)讓它過(guo)充(chong)(chong)，因為(wei)(wei)這時電(dian)(dian)(dian)(dian)流(liu)(liu)很小。而一(yi)(yi)些低價位(wei)車(che)為(wei)(wei)了降(jiang)低生產(chan)成本(ben)，忽略產(chan)品質量用(yong)二段(duan)(duan)(duan)式(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)器甚至是一(yi)(yi)段(duan)(duan)(duan)式(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)器。二段(duan)(duan)(duan)充(chong)(chong)電(dian)(dian)(dian)(dian)器沒有涓流(liu)(liu)充(chong)(chong)電(dian)(dian)(dian)(dian)，容易過(guo)充(chong)(chong)，把電(dian)(dian)(dian)(dian)池充(chong)(chong)成大肚子，導致電(dian)(dian)(dian)(dian)池報廢。