由于放電越淺，其循環次數將大幅度增加。因此，按這一理論，勤充電對循環壽命是有益的，但就目前市場上大量流通使用的充電器來講，由于受價格因素及技術水平等影響，電池充電器存(cun)在故障率高，可靠性(xing)差(cha)，精度(du)低(di)等(deng)缺陷。因(yin)此(ci)，有時(shi)勤充(chong)(chong)電(dian)(dian)(dian)反(fan)而影響電(dian)(dian)(dian)池(chi)(chi)的(de)使用壽(shou)命。將電(dian)(dian)(dian)池(chi)(chi)放(fang)(fang)空再(zai)充(chong)(chong)電(dian)(dian)(dian)，充(chong)(chong)電(dian)(dian)(dian)次(ci)數雖然減少，但放(fang)(fang)電(dian)(dian)(dian)時(shi)由于單體電(dian)(dian)(dian)池(chi)(chi)之間(jian)總會存(cun)在差(cha)異(yi)可能(neng)造成某些單格過(guo)放(fang)(fang)電(dian)(dian)(dian)，過(guo)放(fang)(fang)電(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)接受(shou)能(neng)力會大大降低(di)，引起(qi)充(chong)(chong)電(dian)(dian)(dian)不足(zu)的(de)故障，另(ling)外由于放(fang)(fang)完(wan)電(dian)(dian)(dian)再(zai)充(chong)(chong)電(dian)(dian)(dian)，充(chong)(chong)電(dian)(dian)(dian)器重負荷時(shi)間(jian)長，易損(sun)壞充(chong)(chong)電(dian)(dian)(dian)器。因(yin)此(ci)，綜合上述，我們認為蓄電(dian)(dian)(dian)池(chi)(chi)放(fang)(fang)出(chu)電(dian)(dian)(dian)量的(de) 50-70% 時(shi)進行一次(ci)充(chong)(chong)電(dian)(dian)(dian)是較合理的(de)，對電(dian)(dian)(dian)池(chi)(chi)的(de)使用有好處。