目前充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器主要是三(san)段(duan)(duan)式(shi)的，依次為恒流(liu)(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)、恒壓充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)、浮充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)三(san)個(ge)階段(duan)(duan)，俗稱三(san)段(duan)(duan)式(shi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器。開始(shi)(shi)用1.8安培(pei)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，電(dian)(dian)(dian)(dian)(dian)壓逐漸升高，叫(jiao)恒流(liu)(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)；電(dian)(dian)(dian)(dian)(dian)壓到了(le)一(yi)定值(zhi)叫(jiao)恒壓，在40伏(fu)(fu)左右，最高充(chong)(chong)(chong)(chong)到44伏(fu)(fu)左右，這個(ge)階段(duan)(duan)恒壓；最后(hou)一(yi)段(duan)(duan)，電(dian)(dian)(dian)(dian)(dian)壓達(da)到44伏(fu)(fu)的時候開始(shi)(shi)往下降，降到保底(di)點41伏(fu)(fu)，這時從涓(juan)流(liu)(liu)(liu)開始(shi)(shi)充(chong)(chong)(chong)(chong)，用100毫安小電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)慢(man)慢(man)充(chong)(chong)(chong)(chong)，最后(hou)一(yi)段(duan)(duan)主要是保障讓(rang)電(dian)(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)(chong)足，同時不讓(rang)它過(guo)充(chong)(chong)(chong)(chong)，因為這時電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)很小。而一(yi)些低價位(wei)車(che)為了(le)降低生產(chan)(chan)成(cheng)本(ben)，忽略(lve)產(chan)(chan)品(pin)質(zhi)量(liang)用二(er)段(duan)(duan)式(shi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器甚至是一(yi)段(duan)(duan)式(shi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器。二(er)段(duan)(duan)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器沒有涓(juan)流(liu)(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，容易過(guo)充(chong)(chong)(chong)(chong)，把電(dian)(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)(chong)成(cheng)大肚子，導致電(dian)(dian)(dian)(dian)(dian)池報廢。