鋰電(dian)(dian)池放電(dian)(dian)深度有兩個說法，一(yi)個是(shi)指電(dian)(dian)池放電(dian)(dian)一(yi)定時間之后，電(dian)(dian)壓下降了(le)多(duo)少(shao)，或者說終止電(dian)(dian)壓是(shi)多(duo)少(shao)（這(zhe)個時候一(yi)般是(shi)放完電(dian)(dian)了(le)），另一(yi)個是(shi)對于(yu)電(dian)(dian)池容量來(lai)說的(de)，就是(shi)放電(dian)(dian)電(dian)(dian)量多(duo)少(shao)的(de)意思。

鋰離子電池放(fang)(fang)(fang)電(dian)(dian)(dian)深(shen)度(du)，限制鋰(li)(li)離(li)子(zi)(zi)電(dian)(dian)(dian)池(chi)放(fang)(fang)(fang)電(dian)(dian)(dian)深(shen)度(du)的(de)因素。既然鋰(li)(li)離(li)子(zi)(zi)電(dian)(dian)(dian)池(chi)有充電(dian)(dian)(dian)就(jiu)必定會有放(fang)(fang)(fang)電(dian)(dian)(dian)，從理(li)論(lun)上來(lai)講，鋰(li)(li)離(li)子(zi)(zi)電(dian)(dian)(dian)池(chi)工(gong)作時的(de)放(fang)(fang)(fang)電(dian)(dian)(dian)進程(cheng)是均(jun)衡的(de)，放(fang)(fang)(fang)電(dian)(dian)(dian)時要注意放(fang)(fang)(fang)電(dian)(dian)(dian)速率與(yu)放(fang)(fang)(fang)電(dian)(dian)(dian)的(de)深(shen)度(du)，放(fang)(fang)(fang)電(dian)(dian)(dian)深(shen)度(du)是放(fang)(fang)(fang)電(dian)(dian)(dian)量(liang)(liang)(liang)與(yu)標(biao)稱容量(liang)(liang)(liang)的(de)比值，是指鋰(li)(li)離(li)子(zi)(zi)電(dian)(dian)(dian)池(chi)所放(fang)(fang)(fang)電(dian)(dian)(dian)量(liang)(liang)(liang)與(yu)總(zong)儲存電(dian)(dian)(dian)量(liang)(liang)(liang)（標(biao)稱容量(liang)(liang)(liang)）的(de)比值。數(shu)字越小，就(jiu)意味著放(fang)(fang)(fang)電(dian)(dian)(dian)越淺。鋰(li)(li)離(li)子(zi)(zi)電(dian)(dian)(dian)池(chi)放(fang)(fang)(fang)電(dian)(dian)(dian)深(shen)度(du)與(yu)電(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)流有密切(qie)關系，可以說，表現于電(dian)(dian)(dian)壓(ya)，用途于電(dian)(dian)(dian)流。

1、鋰離子電(dian)(dian)(dian)(dian)池放電(dian)(dian)(dian)(dian)深(shen)(shen)度(du)為80%，便(bian)是(shi)說放電(dian)(dian)(dian)(dian)到剩(sheng)下20%的(de)(de)容(rong)量。放電(dian)(dian)(dian)(dian)深(shen)(shen)度(du)對電(dian)(dian)(dian)(dian)池的(de)(de)影響(xiang)是(shi)：放電(dian)(dian)(dian)(dian)深(shen)(shen)度(du)越(yue)(yue)深(shen)(shen)，鋰離子電(dian)(dian)(dian)(dian)池壽數(shu)越(yue)(yue)簡(jian)單縮短；另(ling)一個方(fang)面(mian)便(bian)是(shi)在放電(dian)(dian)(dian)(dian)曲線上的(de)(de)表現，放電(dian)(dian)(dian)(dian)越(yue)(yue)往(wang)深(shen)(shen)度(du)走，電(dian)(dian)(dian)(dian)壓(ya)和(he)電(dian)(dian)(dian)(dian)流就越(yue)(yue)不穩(wen)定。在相同的(de)(de)放電(dian)(dian)(dian)(dian)制(zhi)度(du)下，電(dian)(dian)(dian)(dian)壓(ya)值越(yue)(yue)小(xiao)，則表明放電(dian)(dian)(dian)(dian)深(shen)(shen)度(du)越(yue)(yue)深(shen)(shen)。小(xiao)電(dian)(dian)(dian)(dian)流放電(dian)(dian)(dian)(dian)更完全，電(dian)(dian)(dian)(dian)流越(yue)(yue)小(xiao)，作業時(shi)刻越(yue)(yue)長(chang)，則抵達(da)相同電(dian)(dian)(dian)(dian)壓(ya)下的(de)(de)帶電(dian)(dian)(dian)(dian)量越(yue)(yue)少(shao)。總之，評(ping)論鋰離子電(dian)(dian)(dian)(dian)池放電(dian)(dian)(dian)(dian)的(de)(de)任何話題都要考慮放電(dian)(dian)(dian)(dian)制(zhi)度(du)，關鍵是(shi)電(dian)(dian)(dian)(dian)流。

2、鋰離(li)子電(dian)(dian)(dian)(dian)池(chi)的電(dian)(dian)(dian)(dian)壓(ya)會隨著電(dian)(dian)(dian)(dian)池(chi)放電(dian)(dian)(dian)(dian)的進行而緩慢下降(jiang)，比如說(shuo)當電(dian)(dian)(dian)(dian)池(chi)放電(dian)(dian)(dian)(dian)容(rong)量剩余80%的時候，而原來電(dian)(dian)(dian)(dian)池(chi)滿(man)電(dian)(dian)(dian)(dian)的電(dian)(dian)(dian)(dian)壓(ya)是4.2V的，現在測量之后是4.1V的（這里是舉(ju)例估算(suan)，僅(jin)做參考，電(dian)(dian)(dian)(dian)池(chi)不同質量性能，數值會有差異(yi)）。

3、鋰離(li)子電(dian)(dian)池向任何電(dian)(dian)器定量(liang)(liang)供給電(dian)(dian)流時(shi)，電(dian)(dian)池內部(bu)的(de)電(dian)(dian)阻會跟著容量(liang)(liang)的(de)下(xia)降而(er)添加(jia)，那當放電(dian)(dian)深度(du)較大時(shi)分(fen)，電(dian)(dian)阻添加(jia)而(er)電(dian)(dian)流恒定，就需求電(dian)(dian)池供給更多的(de)電(dian)(dian)力，并以熱量(liang)(liang)的(de)形(xing)式浪費掉。

4、鋰離子(zi)電(dian)(dian)(dian)池本來較為平穩放(fang)(fang)電(dian)(dian)(dian)曲線在放(fang)(fang)電(dian)(dian)(dian)深度較大時會急劇變化，因此，將(jiang)放(fang)(fang)電(dian)(dian)(dian)深度限定在一個(ge)相對平整的范圍內，可(ke)以(yi)使顧客對電(dian)(dian)(dian)量有一個(ge)更好(hao)的把控，也能得到更好(hao)的運用(yong)體會。

在鋰(li)離子電池(chi)放(fang)(fang)電進程中需(xu)(xu)求注(zhu)意問題，鋰(li)離子電池(chi)放(fang)(fang)電其(qi)實便是要弄(nong)清楚影(ying)響鋰(li)離子電池(chi)放(fang)(fang)電的因(yin)素，重要需(xu)(xu)求在放(fang)(fang)電時刻上面做(zuo)好相關的操(cao)作，這樣也有利(li)于電池(chi)更持久(jiu)的運用。

鋰離子(zi)(zi)電(dian)(dian)(dian)池(chi)(chi)放電(dian)(dian)(dian)深度越(yue)深,電(dian)(dian)(dian)池(chi)(chi)的(de)損(sun)耗(hao)(hao)就(jiu)會越(yue)大;鋰離子(zi)(zi)電(dian)(dian)(dian)池(chi)(chi)充電(dian)(dian)(dian)充得越(yue)滿,電(dian)(dian)(dian)池(chi)(chi)的(de)損(sun)耗(hao)(hao)也會越(yue)大。鋰離子(zi)(zi)電(dian)(dian)(dian)池(chi)(chi)最(zui)好是(shi)處于電(dian)(dian)(dian)量的(de)中間狀(zhuang)態,那(nei)樣的(de)話電(dian)(dian)(dian)池(chi)(chi)壽數最(zui)長。