14500鋰電池就是直徑為14mm，高度為50mm的鋰電池，按電芯材質分為磷酸鐵鋰電池和鈷酸鋰電池。鈷酸鋰電池電壓3.7V，磷酸鐵鋰電池電壓3.2V。由于其外型尺寸與AA5#電池相同，1枚14500鋰電池和1枚占位桶配合，可以代替2枚AA電池使用。相對于鎳氫充電電池，鋰電池具有重量輕、自放電少、放電性能優越的優點，因此被攝影愛好者廣泛應用于數碼相機以及電子煙，代替鎳氫充電電池。續航能力如何？應該還可以，關鍵看你用在什么電器上以及你使用的頻率、強度和持續時間，其標稱容量為1600mAh。

　　東莞鉅大公司，行業領先的14500鋰電池生產廠家，可根據客戶的需求定制各種規格的14500鋰電池組。下面為大家簡單介紹14500鋰電池的3個常見問題：

　　1．14500選購問題

　　由于鋰電池的電壓為（2.5V---3.7V）過放或過充都會損壞電池，所以帶保護板的可以保護電池。我這不樣認為，由于帶保護板的14500電池比普通的5號池高幾MM左右，有的相機蓋子蓋不上，能蓋上也能相機的電池觸片有影響，時間長了彈性會下降會造成接觸不良。再個帶個保護板不能發揮電池的最大能效，由于保護電路在2。5V時自動斷電了，相機會突然斷電，不會自動關機，可能會給相機造成損失。

　　2．14500過放問題

　　在不帶保護板在最低電壓總題上有些細節問題要注意：

　　*相機的電壓范圍，一般相機電壓為2.4V到4.2V

　　所以相機會在用電壓到2.4V時下常關機，相機有選取擇電池類型選擇（堿性，鎳電池，鋰電池），選擇不同的電池類型關機電壓是不一樣的，只要選鋰電池它的關機電壓是2.6V。不帶保護板的電池2.5V為安全電壓，所以不存在過放問題，而且還能發揮電池最大能效。（根據自已相機決定）

　　3．14500過充問題

　　鋰電池芯過充到電壓高于4.2V后，會開始產生副作用。過充電壓愈高，危險性也跟著愈高。鋰電芯電壓高于4.2V后，正極材料內剩下的鋰原子數量不到一半，此時儲存格常會垮掉，讓電池容量產生永久性的下降。如果繼續充電，由于負極的儲存格已經裝滿了鋰原子，后續的鋰金屬會堆積于負極材料表面。這些鋰原子會由負極表面往鋰離子來的方向長出樹枝狀結晶。這些鋰金屬結晶會穿過隔膜紙，使正負極短路。有時在短路發生前電池就先爆炸，這是因為在過充過程，電解液等材料會裂解產生氣體，使得電池外殼或壓力閥鼓漲破裂，讓氧氣進去與堆積在負極表面的鋰原子反應，進而爆炸。

　　因此(ci)(ci)，鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)時，一定(ding)要(yao)設定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)上限(xian)，才(cai)可以(yi)同(tong)時兼顧到電(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)壽命(ming)、容(rong)量(liang)、和安全性。最(zui)理(li)想(xiang)的(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)上限(xian)為4.2V。鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)時也(ye)要(yao)有(you)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)下限(xian)。當電(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)低于(yu)2.4V時，部分材料(liao)會(hui)開始被(bei)破壞。又由于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)池會(hui)自放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)，放(fang)愈(yu)久(jiu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)會(hui)愈(yu)低，因此(ci)(ci)，放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)時最(zui)好不(bu)(bu)要(yao)放(fang)到2.4V才(cai)停止(zhi)。鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)池從3.0V放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)到2.4V這段期間(jian)，所釋放(fang)的(de)(de)能量(liang)只占電(dian)(dian)(dian)(dian)(dian)(dian)池容(rong)量(liang)的(de)(de)3%左右。因此(ci)(ci)，3.0V是一個(ge)理(li)想(xiang)的(de)(de)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)截止(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。充(chong)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)時，除了電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)限(xian)制，電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)限(xian)制也(ye)有(you)其必要(yao)。電(dian)(dian)(dian)(dian)(dian)(dian)流過大時，鋰(li)離子來不(bu)(bu)及進入儲存格，會(hui)聚集(ji)于(yu)材料(liao)表面。