當蓄(xu)電(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)(chong)(chong)(chong)足電(dian)(dian)(dian)后，充(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)機必(bi)須適時(shi)地(di)切(qie)斷充(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流，否則蓄(xu)電(dian)(dian)(dian)池(chi)(chi)將出現大(da)量出氣、失(shi)水和(he)溫升等過充(chong)(chong)(chong)(chong)(chong)(chong)反應，直(zhi)接危及蓄(xu)電(dian)(dian)(dian)池(chi)(chi)的(de)使用壽命(ming)。因此，必(bi)須隨時(shi)監(jian)測蓄(xu)電(dian)(dian)(dian)池(chi)(chi)的(de)充(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)狀(zhuang)況，保證電(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)(chong)(chong)(chong)足電(dian)(dian)(dian)而又不過充(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)。主要的(de)停充(chong)(chong)(chong)(chong)(chong)(chong)控制方法有：

（1）定時(shi)(shi)(shi)(shi)(shi)控制采用恒流充(chong)(chong)電(dian)(dian)(dian)(dian)法時(shi)(shi)(shi)(shi)(shi)，電(dian)(dian)(dian)(dian)池所需充(chong)(chong)電(dian)(dian)(dian)(dian)時(shi)(shi)(shi)(shi)(shi)間可(ke)(ke)根據(ju)(ju)電(dian)(dian)(dian)(dian)池容(rong)量和充(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流的大(da)小很容(rong)易地(di)確定，因(yin)(yin)此(ci)只(zhi)要預先設定好(hao)充(chong)(chong)電(dian)(dian)(dian)(dian)時(shi)(shi)(shi)(shi)(shi)間，一旦時(shi)(shi)(shi)(shi)(shi)間一到(dao)，定時(shi)(shi)(shi)(shi)(shi)器即(ji)可(ke)(ke)發出信號停充(chong)(chong)或降(jiang)為涓流充(chong)(chong)電(dian)(dian)(dian)(dian)。定時(shi)(shi)(shi)(shi)(shi)器可(ke)(ke)由時(shi)(shi)(shi)(shi)(shi)間繼電(dian)(dian)(dian)(dian)器充(chong)(chong)當，或者(zhe)由單(dan)(dan)片機承(cheng)擔其功能(neng)。這種方法簡單(dan)(dan)，但充(chong)(chong)電(dian)(dian)(dian)(dian)時(shi)(shi)(shi)(shi)(shi)間不能(neng)根據(ju)(ju)電(dian)(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)(dian)前狀態而自動調整(zheng)，因(yin)(yin)此(ci)實際充(chong)(chong)電(dian)(dian)(dian)(dian)時(shi)(shi)(shi)(shi)(shi)，可(ke)(ke)能(neng)會出現有時(shi)(shi)(shi)(shi)(shi)欠充(chong)(chong)、有時(shi)(shi)(shi)(shi)(shi)過充(chong)(chong)的現象；

（2）電(dian)(dian)(dian)池(chi)(chi)溫(wen)度(du)控制對Ni-cd電(dian)(dian)(dian)池(chi)(chi)而言(yan)，正常充電(dian)(dian)(dian)時，蓄電(dian)(dian)(dian)池(chi)(chi)的(de)溫(wen)度(du)變化(hua)(hua)并不明(ming)顯，但是(shi)，當電(dian)(dian)(dian)池(chi)(chi)過充時，其內(nei)部(bu)氣體壓力將迅速增(zeng)大，負極板(ban)上氧化(hua)(hua)反應使(shi)內(nei)部(bu)發熱，溫(wen)度(du)迅速上升（每分(fen)(fen)鐘可升高幾個攝氏度(du)）。因此，觀察(cha)電(dian)(dian)(dian)池(chi)(chi)溫(wen)度(du)的(de)變化(hua)(hua)，即(ji)可判斷電(dian)(dian)(dian)池(chi)(chi)是(shi)否已經充滿。通常采用兩只熱敏電(dian)(dian)(dian)阻(zu)(zu)分(fen)(fen)別檢測電(dian)(dian)(dian)池(chi)(chi)溫(wen)度(du)和環境溫(wen)度(du)，當兩者溫(wen)差(cha)達(da)到一定值(zhi)時，即(ji)發出停充信號。由于熱敏電(dian)(dian)(dian)阻(zu)(zu)動態響應速度(du)較慢(man)，故不能及(ji)時準確地檢測到電(dian)(dian)(dian)池(chi)(chi)的(de)滿充狀態；

（3）電池(chi)端(duan)電壓(ya)負增(zeng)(zeng)量(liang)控(kong)制一(yi)般而言，當(dang)電池(chi)充(chong)(chong)足電后，其端(duan)電壓(ya)將呈現下降趨勢，據此(ci)可(ke)將電池(chi)電壓(ya)出現負增(zeng)(zeng)長的(de)時刻(ke)作為停(ting)(ting)充(chong)(chong)時刻(ke)。與溫度控(kong)制法相比，這種(zhong)方法響應(ying)速(su)度快(kuai)，此(ci)外，電壓(ya)的(de)負增(zeng)(zeng)量(liang)與電壓(ya)的(de)絕對值無關，因(yin)此(ci)這種(zhong)停(ting)(ting)充(chong)(chong)控(kong)制方法可(ke)適應(ying)具有不(bu)同單(dan)格電池(chi)數(shu)的(de)蓄電池(chi)組充(chong)(chong)電。此(ci)方法的(de)缺點是(shi)一(yi)般的(de)檢測器靈敏度和可(ke)靠性不(bu)高，同時，當(dang)環境溫度較(jiao)高時，電池(chi)充(chong)(chong)足電后電壓(ya)的(de)減(jian)小(xiao)并(bing)不(bu)明顯，因(yin)而難以控(kong)制。