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，電池充電器存在故(gu)障率高(gao)，可(ke)靠性差(cha)，精度低(di)等缺陷。因此，有時勤充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)反而影(ying)響電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)使(shi)(shi)用壽(shou)命。將電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池放空再充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)次(ci)數(shu)雖然減少，但放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時由(you)于(yu)單體電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池之間總會(hui)存在差(cha)異可(ke)能(neng)造成某(mou)些單格過放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，過放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)接受(shou)能(neng)力(li)會(hui)大(da)大(da)降低(di)，引起充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)不(bu)足的(de)(de)故(gu)障，另外由(you)于(yu)放完電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)再充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)重負荷(he)時間長，易損壞充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)。因此，綜(zong)合(he)上述(shu)，我們(men)認為蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池放出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)量的(de)(de) 50-70% 時進行一次(ci)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)是較合(he)理的(de)(de)，對電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)使(shi)(shi)用有好處(chu)。