目(mu)前充(chong)(chong)電(dian)器(qi)主要(yao)是三(san)(san)段式的，依次為(wei)(wei)恒(heng)流(liu)(liu)(liu)充(chong)(chong)電(dian)、恒(heng)壓(ya)(ya)充(chong)(chong)電(dian)、浮充(chong)(chong)電(dian)三(san)(san)個(ge)階段，俗稱三(san)(san)段式充(chong)(chong)電(dian)器(qi)。開始(shi)用1.8安培充(chong)(chong)電(dian)，電(dian)壓(ya)(ya)逐漸升(sheng)高，叫恒(heng)流(liu)(liu)(liu)充(chong)(chong)電(dian)；電(dian)壓(ya)(ya)到了一(yi)定值叫恒(heng)壓(ya)(ya)，在(zai)40伏(fu)(fu)左右(you)，最高充(chong)(chong)到44伏(fu)(fu)左右(you)，這(zhe)個(ge)階段恒(heng)壓(ya)(ya)；最后(hou)一(yi)段，電(dian)壓(ya)(ya)達到44伏(fu)(fu)的時(shi)候開始(shi)往下降，降到保底點(dian)41伏(fu)(fu)，這(zhe)時(shi)從涓(juan)流(liu)(liu)(liu)開始(shi)充(chong)(chong)，用100毫(hao)安小電(dian)流(liu)(liu)(liu)慢(man)(man)慢(man)(man)充(chong)(chong)，最后(hou)一(yi)段主要(yao)是保障讓(rang)電(dian)池充(chong)(chong)足，同時(shi)不讓(rang)它(ta)過充(chong)(chong)，因為(wei)(wei)這(zhe)時(shi)電(dian)流(liu)(liu)(liu)很小。而一(yi)些低價位車為(wei)(wei)了降低生產(chan)成(cheng)本，忽(hu)略產(chan)品質(zhi)量用二段式充(chong)(chong)電(dian)器(qi)甚至是一(yi)段式充(chong)(chong)電(dian)器(qi)。二段充(chong)(chong)電(dian)器(qi)沒有(you)涓(juan)流(liu)(liu)(liu)充(chong)(chong)電(dian)，容易過充(chong)(chong)，把電(dian)池充(chong)(chong)成(cheng)大肚子，導致電(dian)池報廢。