蓄電池充電機最早采用的是變壓器式的充電機，但是由于變壓器式充電機的體積過于大、笨重(zhong)、造價(jia)低(di)、充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)效(xiao)率低(di)，現在(zai)基本上很少采用(yong)。目前使(shi)用(yong)比較廣泛的是(shi)電(dian)(dian)(dian)(dian)(dian)子充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器。蓄電(dian)(dian)(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)機(ji)輸入交流(liu)電(dian)(dian)(dian)(dian)(dian)壓為220V左右，輸出端接蓄電(dian)(dian)(dian)(dian)(dian)池，其充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)方式：其一，以大電(dian)(dian)(dian)(dian)(dian)流(liu)脈沖充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)間歇放電(dian)(dian)(dian)(dian)(dian)、補償；其二，以恒(heng)流(liu)、恒(heng)壓浮沖保(bao)持對(dui)被沖的蓄電(dian)(dian)(dian)(dian)(dian)池提供穩(wen)定的充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)壓及電(dian)(dian)(dian)(dian)(dian)流(liu)。

充(chong)電機(ji)具有輸出(chu)(chu)短路(lu)保護、輸出(chu)(chu)過(guo)壓、過(guo)流(liu)保護及過(guo)沖(chong)保護功能，保證(zheng)蓄(xu)電池(chi)使(shi)用壽(shou)命(ming)。由于近些年來快速(su)(su)充(chong)電技術的(de)發展，使(shi)傳(chuan)統的(de)鉛(qian)酸蓄(xu)電池(chi)快速(su)(su)充(chong)電性能不好(hao)的(de)概念(nian)已有了(le)新的(de)改變(bian)。實驗證(zheng)明：多數閥控式鉛(qian)酸電池(chi)可以承受快速(su)(su)充(chong)電，而且(qie)合理(li)的(de)快速(su)(su)充(chong)電對(dui)延長電池(chi)壽(shou)命(ming)不但無害(hai)而且(qie)有利。