5號電池電壓(ya)有1.2V/1.5V/3.7V這(zhe)幾種，每種電壓(ya)代表不同種類的電池，而(er)在(zai)容量方面(mian)則(ze)有300mAh/450mAh/600mAh等(deng)這(zhe)些，主(zhu)要還是(shi)要看具體需求而(er)定。

1、5號電池電壓是1.2V的是鎳氫電池和鎳鎘電池這兩種，而鎳鎘電池與鎳氫電池相比不僅能量密(mi)度低，而且還因(yin)為重金屬(shu)鎘污(wu)染，讓其(qi)在慢慢的退出(chu)電池行(xing)業；

（1）鎳鎘電(dian)(dian)池：標稱電(dian)(dian)壓(ya)為(wei)(wei)1.2V，放電(dian)(dian)終(zhong)止電(dian)(dian)壓(ya)與放電(dian)(dian)率(lv)(lv)有(you)關(guan)，8小(xiao)時(shi)率(lv)(lv)放電(dian)(dian)的終(zhong)止電(dian)(dian)壓(ya)為(wei)(wei)1.10V，5小(xiao)時(shi)率(lv)(lv)為(wei)(wei)1.00V。

（2）鎳氫電池(chi)的放電終(zhong)(zhong)止電壓一(yi)般規定為1.0V，充(chong)電終(zhong)(zhong)止電壓為1.5V，標稱電壓為1.2V，鎳鎘和鎳氫5號電池(chi)的終(zhong)(zhong)止電壓一(yi)般都在0.9V~1.1V之間。由于(yu)鋰(li)電池(chi)的普及，現(xian)在人們常(chang)會說到5號鋰(li)電池(chi)，那(nei)其實是相當于(yu)14500電池(chi)，這種5號電池(chi)電壓的標稱值是3.7V。

2、一(yi)(yi)(yi)次性5號電(dian)池的(de)(de)標稱電(dian)壓為1.5V，終(zhong)止電(dian)壓為0.9V，這一(yi)(yi)(yi)點堿(jian)性電(dian)池和碳性電(dian)池都是(shi)一(yi)(yi)(yi)樣的(de)(de)。對(dui)一(yi)(yi)(yi)次電(dian)池容量的(de)(de)判(pan)斷(duan)標準(zhun)，其實就是(shi)放(fang)電(dian)到0.9V時(shi)的(de)(de)放(fang)電(dian)時(shi)間，這是(shi)性能(neng)中最重要的(de)(de)參數，也是(shi)一(yi)(yi)(yi)次電(dian)池的(de)(de)價格(ge)之基。

3、5號電(dian)(dian)池電(dian)(dian)壓(ya)是3.7V的(de)是鋰電(dian)(dian)池類的(de)5號電(dian)(dian)池

充放電曲(qu)線可以幫助(zhu)我(wo)們認識5號電池(chi)電壓的階(jie)段性(xing)特征。

1、從5號碳性(xing)(xing)(xing)電(dian)池(chi)和堿(jian)(jian)性(xing)(xing)(xing)電(dian)池(chi)放(fang)電(dian)曲(qu)線上可(ke)以(yi)看(kan)到，在(zai)用3.9Ω放(fang)電(dian)時，堿(jian)(jian)性(xing)(xing)(xing)電(dian)池(chi)下(xia)降(jiang)速(su)度慢許多，這是堿(jian)(jian)性(xing)(xing)(xing)電(dian)池(chi)更耐用的根(gen)源所在(zai)。

2、鎳鎘電(dian)池和鎳氫電(dian)池充放(fang)電(dian)時(shi)的(de)表(biao)現對比(bi)，充電(dian)終止時(shi)，鎳鎘5號(hao)電(dian)池電(dian)壓下降比(bi)鎳氫5號(hao)電(dian)池電(dian)壓要快得(de)多。

5號電(dian)池(chi)(chi)(chi)(chi)(chi)電(dian)壓(ya)被要求標(biao)識在電(dian)池(chi)(chi)(chi)(chi)(chi)外殼上面，在充電(dian)電(dian)池(chi)(chi)(chi)(chi)(chi)使(shi)用中要注(zhu)意的是(shi)過(guo)度充放(fang)(fang)電(dian)對5號電(dian)池(chi)(chi)(chi)(chi)(chi)電(dian)壓(ya)的影響(xiang)，當發(fa)生過(guo)充過(guo)放(fang)(fang)時，會對電(dian)極結構(gou)造成(cheng)破(po)壞，電(dian)池(chi)(chi)(chi)(chi)(chi)可逆反應不能(neng)完(wan)全恢(hui)復，從(cong)而使(shi)得電(dian)池(chi)(chi)(chi)(chi)(chi)容(rong)量(liang)永久(jiu)受損。一次電(dian)池(chi)(chi)(chi)(chi)(chi)也會過(guo)放(fang)(fang)，此時5號電(dian)池(chi)(chi)(chi)(chi)(chi)電(dian)壓(ya)會降到0.9V以(yi)下(xia)，那就會形成(cheng)漏液，電(dian)池(chi)(chi)(chi)(chi)(chi)不能(neng)再用。