單節鋰電池的標稱電壓是3.6或者3.7V，實際滿電電壓大多數場合下比這要高，充滿電達到4.2V，正常放電電壓為4.1~3.6V，低于3.6V，有時用電器（比如數碼相機）就會顯示電池不足，達到3.1-3.2V時干脆就自動關機。盡管有些鋰電池說明書上寫放電電壓為2.75V，一般是說大電流場合。

盡(jin)管很多(duo)鋰(li)離子(zi)電(dian)(dian)(dian)(dian)池(chi)的(de)內(nei)部(bu)放電(dian)(dian)(dian)(dian)保(bao)護電(dian)(dian)(dian)(dian)路動作電(dian)(dian)(dian)(dian)壓為(wei)2.5V，那是極端場(chang)合，低(di)(di)于2.5V會(hui)造成很大的(de)、永久性的(de)損害。事實(shi)上，單節鋰(li)電(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)壓低(di)(di)于3.3V，放電(dian)(dian)(dian)(dian)曲(qu)線下降速度(du)很快(kuai)，已(yi)經沒(mei)有什(shen)么實(shi)用價值，因此建議(yi)放電(dian)(dian)(dian)(dian)終止電(dian)(dian)(dian)(dian)壓為(wei)3.2V，假如(ru)大電(dian)(dian)(dian)(dian)流放電(dian)(dian)(dian)(dian)（0.5C左(zuo)右），中止電(dian)(dian)(dian)(dian)壓可以低(di)(di)一些。

單節鋰電(dian)池(chi)電(dian)壓(ya)是零伏怎么(me)辦？

通(tong)常假如不(bu)帶(dai)保護板的單(dan)節(jie)鋰電池電壓為0，那(nei)有兩(liang)種可(ke)能(neng)。

鋰離子(zi)電池(chi)因(yin)為短路造成電池(chi)內部保護極(ji)耳熔斷(duan)，這種電池(chi)因(yin)為出現(xian)結(jie)構性損壞，所以根據(ju)是不能(neng)修(xiu)復(fu)了，直(zhi)接放棄即可(ke)。

鋰(li)(li)(li)離(li)子(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)因為(wei)(wei)放(fang)(fang)置時(shi)間太長，由鋰(li)(li)(li)離(li)子(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)緩慢(man)自放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)而引(yin)起電(dian)(dian)(dian)(dian)(dian)池(chi)容量(liang)耗盡，這類電(dian)(dian)(dian)(dian)(dian)池(chi)存在(zai)修復的(de)可(ke)(ke)能(neng)性，大家可(ke)(ke)以根據(ju)文中要求(qiu)或使用符合要求(qiu)的(de)鋰(li)(li)(li)離(li)子(zi)電(dian)(dian)(dian)(dian)(dian)池(chi)專用充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器進(jin)行充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，假如電(dian)(dian)(dian)(dian)(dian)壓低(di)于3V，要先(xian)進(jin)行預充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流為(wei)(wei)設定電(dian)(dian)(dian)(dian)(dian)流的(de)1/10，電(dian)(dian)(dian)(dian)(dian)壓升到(dao)3V后，進(jin)入標準充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程。假如有(you)電(dian)(dian)(dian)(dian)(dian)流出現，理論(lun)上講電(dian)(dian)(dian)(dian)(dian)池(chi)還是有(you)生(sheng)命力的(de)，假如根據(ju)沒有(you)反應，基本也(ye)可(ke)(ke)以判(pan)定死刑了。

帶保護板的單(dan)體(ti)鋰離(li)子(zi)電池(chi)

帶(dai)保護板(ban)的(de)(de)單體鋰離子(zi)電池電壓為(wei)零(ling)時(shi)，就(jiu)要考慮保護板(ban)損(sun)壞(huai)(huai)的(de)(de)可(ke)能性，排(pai)除保護板(ban)損(sun)壞(huai)(huai)的(de)(de)辦法(fa)相對(dui)簡單，一般用(yong)(yong)萬用(yong)(yong)表可(ke)以(yi)測(ce)試判(pan)斷，假(jia)如(ru)排(pai)除保護板(ban)的(de)(de)問題后鋰離子(zi)電池仍然沒(mei)有(you)電壓，可(ke)以(yi)參考上面(mian)不帶(dai)保護板(ban)的(de)(de)單體電池修復(fu)辦法(fa)進行(xing)修復(fu)。