近日總有人說XX充電器好, 其他的如何如何差等諸多言論。為此，很有必要對此現象進行澄清。好的充電器至少(shao)應該(gai)是：即能(neng)大電(dian)(dian)流(liu)短時(shi)間把電(dian)(dian)池(chi)充滿(man)電(dian)(dian)，同(tong)時(shi)又能(neng)令到電(dian)(dian)池(chi)溫升很(hen)少(shao)。

      在(zai)所有的(de)(de)環境因素中(zhong)，溫度(du)對電(dian)池(chi)(chi)的(de)(de)充放電(dian)性(xing)能影(ying)響(xiang)(xiang)最(zui)大，高(gao)(gao)于45度(du)，對鎳氫電(dian)池(chi)(chi)性(xing)能和(he)壽命有嚴重影(ying)響(xiang)(xiang)。為降低(di)高(gao)(gao)溫對電(dian)池(chi)(chi)壽命的(de)(de)損害，某些新型的(de)(de)電(dian)池(chi)(chi)采用在(zai)電(dian)極(ji)端子上連接一個金屬導電(dian)片，降低(di)局部(bu)(bu)高(gao)(gao)熱(re)的(de)(de)可(ke)能性(xing)，另有工(gong)廠將電(dian)池(chi)(chi)殼外部(bu)(bu)做成柵凸狀，組合時各單(dan)體電(dian)池(chi)(chi)凸部(bu)(bu)互相接觸，凹部(bu)(bu)構成單(dan)體電(dian)池(chi)(chi)之(zhi)間(jian)上下(xia)方(fang)向的(de)(de)空間(jian)，內部(bu)(bu)填充制冷劑，使其(qi)從電(dian)池(chi)(chi)下(xia)方(fang)向極(ji)柱端流動，進行冷卻。

為什么會產生高溫？
       當(dang)以0.5C或以上的電(dian)流對鎳氫(qing)電(dian)池進行充(chong)(chong)電(dian), 就容易(yi)導致(zhi)電(dian)池發熱(re)(re)，特(te)別是(shi)充(chong)(chong)入了(le)0.7C后。這時候有一部(bu)份電(dian)能(neng)轉化(hua)為熱(re)(re)能(neng)從而(er)導致(zhi)溫(wen)度上升。

環境溫度對電池性能有何影響？ 
      電極/電解液界面上的電化學反應與環境溫度有關，電極/電解液界面被視為電池的心臟。一般來說，高溫可加速化學反應，但同時也加快電池內部老化的過程。如果溫度下降，電極的反應率也下降，假設電池電壓保持恒定，放電電流降低，電池的功率輸出也會下降。如果溫度上升則相反，即電池輸出功率會上升，溫度也影響電解液的傳送速度溫度上升則加快，傳送溫度下降，傳送減慢，電池充放電性能也會受到影響。
       鎳鎘鎳氫(qing)電(dian)(dian)(dian)池(chi)(chi)的(de)放電(dian)(dian)(dian)效率在(zai)低(di)溫(wen)(wen)會(hui)(hui)有(you)顯(xian)著的(de)降(jiang)(jiang)低(di)（如低(di)于(yu)-15℃），而在(zai)-20℃時(shi)，堿液(ye)達到起凝固(gu)點，電(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)速度(du)也將(jiang)大(da)(da)(da)大(da)(da)(da)降(jiang)(jiang)低(di)。在(zai)低(di)溫(wen)(wen)充(chong)(chong)電(dian)(dian)(dian)低(di)于(yu)0℃會(hui)(hui)增(zeng)(zeng)大(da)(da)(da)電(dian)(dian)(dian)池(chi)(chi)內壓并可能(neng)時(shi)安全閥開啟（電(dian)(dian)(dian)池(chi)(chi)就(jiu)會(hui)(hui)因此(ci)報(bao)廢(fei)了）。為了有(you)效充(chong)(chong)電(dian)(dian)(dian)，環(huan)境溫(wen)(wen)度(du)范圍應(ying)在(zai)5-30℃之間(jian)，一般(ban)充(chong)(chong)電(dian)(dian)(dian)效率會(hui)(hui)隨溫(wen)(wen)度(du)的(de)升高(gao)而升高(gao)，高(gao)溫(wen)(wen)時(shi)析氧電(dian)(dian)(dian)位(wei)較低(di)，充(chong)(chong)電(dian)(dian)(dian)效率下降(jiang)(jiang)。充(chong)(chong)電(dian)(dian)(dian)時(shi)環(huan)境溫(wen)(wen)度(du)一般(ban)控(kong)制在(zai)３０度(du)以下。當溫(wen)(wen)度(du)升到45℃以上(shang)，高(gao)溫(wen)(wen)下充(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)池(chi)(chi)材料(liao)的(de)性能(neng)會(hui)(hui)退化，導致副反應(ying)，電(dian)(dian)(dian)池(chi)(chi)內阻將(jiang)會(hui)(hui)增(zeng)(zeng)大(da)(da)(da)，電(dian)(dian)(dian)池(chi)(chi)的(de)循環(huan)壽命也將(jiang)大(da)(da)(da)大(da)(da)(da)縮短(duan)。 

如何解決電池溫度過高？
A．    選擇慢充的充電器。
B．    利用散熱風扇進行冷卻。（風冷時，會令很多“智能”充電器不能自動判別充滿，好的充電器會導致電(dian)(dian)池(chi)稍微(wei)過充電(dian)(dian)，差的充電(dian)(dian)器會導致電(dian)(dian)池(chi)嚴重過充電(dian)(dian)）

有條件的話，大家可以檢查一下自己手上的充電器在充電末期的電池溫度，如果超過45度，最好馬上把它仍了。是不是好的充電器，電池的溫升是重要指標之一。