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，電池充電器存在故障(zhang)率高，可靠性差，精度低等缺(que)陷。因此，有時(shi)勤充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)反(fan)而影響電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)使(shi)用壽命。將電(dian)(dian)(dian)(dian)(dian)池(chi)放空再充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)次數(shu)雖然減(jian)少(shao)，但(dan)放電(dian)(dian)(dian)(dian)(dian)時(shi)由(you)于(yu)單(dan)體電(dian)(dian)(dian)(dian)(dian)池(chi)之間總(zong)會存在差異可能造成某些(xie)單(dan)格過放電(dian)(dian)(dian)(dian)(dian)，過放電(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)接受能力會大大降低，引起充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)不足(zu)的(de)故障(zhang)，另外由(you)于(yu)放完電(dian)(dian)(dian)(dian)(dian)再充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)重負荷時(shi)間長，易損壞充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器(qi)。因此，綜合上(shang)述，我們認(ren)為蓄電(dian)(dian)(dian)(dian)(dian)池(chi)放出(chu)電(dian)(dian)(dian)(dian)(dian)量(liang)的(de) 50-70% 時(shi)進行一次充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)是較合理的(de)，對電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)使(shi)用有好處。