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，可靠性差(cha)，精(jing)度低(di)等缺陷。因此(ci)，有時(shi)勤充(chong)電(dian)(dian)(dian)(dian)反而(er)影(ying)響電(dian)(dian)(dian)(dian)池的(de)(de)使(shi)用(yong)壽命。將電(dian)(dian)(dian)(dian)池放(fang)空再(zai)充(chong)電(dian)(dian)(dian)(dian)，充(chong)電(dian)(dian)(dian)(dian)次數雖然減少(shao)，但放(fang)電(dian)(dian)(dian)(dian)時(shi)由(you)于單(dan)體電(dian)(dian)(dian)(dian)池之間(jian)總會存(cun)在差(cha)異可能造成某些單(dan)格過放(fang)電(dian)(dian)(dian)(dian)，過放(fang)電(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)接受能力會大大降低(di)，引(yin)起充(chong)電(dian)(dian)(dian)(dian)不足(zu)的(de)(de)故障，另(ling)外由(you)于放(fang)完電(dian)(dian)(dian)(dian)再(zai)充(chong)電(dian)(dian)(dian)(dian)，充(chong)電(dian)(dian)(dian)(dian)器(qi)重負荷時(shi)間(jian)長，易(yi)損壞充(chong)電(dian)(dian)(dian)(dian)器(qi)。因此(ci)，綜合上述，我們認為蓄電(dian)(dian)(dian)(dian)池放(fang)出電(dian)(dian)(dian)(dian)量的(de)(de) 50-70% 時(shi)進行一次充(chong)電(dian)(dian)(dian)(dian)是(shi)較合理的(de)(de)，對電(dian)(dian)(dian)(dian)池的(de)(de)使(shi)用(yong)有好處。