數碼相機的迅速普及在無形中也帶動了鎳氫充電電池的高速發展。由于數碼相機的工作電流普遍較大，也比較耗電，普通的堿性電池已經難以長時間勝任數碼相機的動力之源。而鎳氫充電電池不但容量較大，還能提供較大的工作電流，又能重復使用且環保，自然而然地成為了大部分數碼相機玩家首選的能源。
      綜觀鎳氫電池市場，與原裝充電器搭配銷售的(de)(de)套(tao)裝電(dian)(dian)池(chi)(chi)(chi)工(gong)(gong)作穩定(ding)，但價(jia)(jia)格(ge)較(jiao)(jiao)高，因此不少玩家都把目光瞄準了價(jia)(jia)格(ge)相對較(jiao)(jiao)低(di)的(de)(de)零售電(dian)(dian)池(chi)(chi)(chi)或價(jia)(jia)格(ge)更為便宜的(de)(de)工(gong)(gong)業包裝電(dian)(dian)池(chi)(chi)(chi)--這些電(dian)(dian)池(chi)(chi)(chi)都沒有充(chong)(chong)電(dian)(dian)器(qi)(qi)搭配銷售。另外，一部(bu)分(fen)玩家電(dian)(dian)池(chi)(chi)(chi)使用量(liang)較(jiao)(jiao)大，一個(ge)充(chong)(chong)電(dian)(dian)器(qi)(qi)已經不能滿足日常需求，所以另行購(gou)買(mai)電(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)器(qi)(qi)是必(bi)要的(de)(de)。因而如何去選擇讓(rang)自己滿意的(de)(de)鎳氫電(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)器(qi)(qi)便成了重(zhong)要的(de)(de)事情(qing)。

       劣(lie)(lie)質充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)的(de)危(wei)(wei)害(hai)(hai)： 一(yi)個充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)的(de)價格一(yi)般都在幾十元(yuan)到(dao)數百元(yuan)之間，比起(qi)數碼相機的(de)價格來(lai)說(shuo)真是顯得有(you)些微不(bu)(bu)足(zu)道。但(dan)這個小(xiao)小(xiao)的(de)充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)如(ru)果質量(liang)不(bu)(bu)過關的(de)話(hua)，給用(yong)戶(hu)(hu)帶(dai)來(lai)的(de)危(wei)(wei)害(hai)(hai)卻不(bu)(bu)小(xiao)。首先，劣(lie)(lie)質充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)由于配(pei)件質量(liang)不(bu)(bu)過關或(huo)電(dian)(dian)氣性能不(bu)(bu)良，自身(shen)容易(yi)出現短(duan)路、過熱(re)燒毀等故(gu)障(zhang)，輕則(ze)讓(rang)用(yong)戶(hu)(hu)損失充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)，重則(ze)會(hui)引(yin)起(qi)各(ge)種災難性的(de)危(wei)(wei)害(hai)(hai)如(ru)火災等；其次，劣(lie)(lie)質充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)由于輸出電(dian)(dian)流不(bu)(bu)穩(wen)定(ding)或(huo)不(bu)(bu)符合規格，會(hui)引(yin)起(qi)電(dian)(dian)池過熱(re)、充(chong)(chong)(chong)電(dian)(dian)不(bu)(bu)完全等故(gu)障(zhang)，輕則(ze)影響(xiang)使(shi)用(yong)，重則(ze)會(hui)引(yin)起(qi)電(dian)(dian)池爆炸等危(wei)(wei)險。由此(ci)看(kan)來(lai)，充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)質量(liang)的(de)好壞的(de)確要引(yin)起(qi)消費者的(de)注意。作一(yi)個形象(xiang)的(de)比喻(yu)，電(dian)(dian)池好比戰場上的(de)士兵，而充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)就好比后(hou)勤(qin)部(bu)隊--要讓(rang)士兵在火線(xian)上隨時保(bao)持(chi)良好的(de)戰斗狀態，后(hou)勤(qin)部(bu)隊至關重要。下(xia)面就讓(rang)我們一(yi)步步來(lai)選購充(chong)(chong)(chong)電(dian)(dian)器(qi)(qi)。

      充(chong)(chong)電(dian)(dian)(dian)器的(de)分(fen)類：充(chong)(chong)電(dian)(dian)(dian)器通(tong)常按充(chong)(chong)電(dian)(dian)(dian)時間(jian)(jian)來(lai)分(fen)類，有(you)"快速充(chong)(chong)電(dian)(dian)(dian)器（以下(xia)簡(jian)稱快充(chong)(chong)）"和"慢速充(chong)(chong)電(dian)(dian)(dian)器（以下(xia)簡(jian)稱慢充(chong)(chong)）"兩(liang)種。鎳氫電(dian)(dian)(dian)池的(de)充(chong)(chong)電(dian)(dian)(dian)時間(jian)(jian)基本上可(ke)按下(xia)列公式(shi)計算(suan)：充(chong)(chong)電(dian)(dian)(dian)時間(jian)(jian)（小(xiao)時）≈效(xiao)率系數×容量（mAh）÷充(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流(mA)  注：效(xiao)率系數為1.2～1.5之間(jian)(jian)的(de)一個不定(ding)數，因不同充(chong)(chong)電(dian)(dian)(dian)器而異(yi)。

      慢(man)充(chong)(chong)(chong)(chong)一(yi)般采用(yong)(yong)恒(heng)流(liu)方式充(chong)(chong)(chong)(chong)電(dian)(dian)，且在電(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)滿(man)后自動轉為涓(juan)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)狀態。慢(man)充(chong)(chong)(chong)(chong)的(de)(de)優點是(shi)電(dian)(dian)路設計簡單，易于(yu)實現(xian)，價格也(ye)較低;由于(yu)采用(yong)(yong)小電(dian)(dian)流(liu)恒(heng)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)，有效地(di)降低了(le)電(dian)(dian)池(chi)在充(chong)(chong)(chong)(chong)電(dian)(dian)過程中的(de)(de)發(fa)熱量，對延(yan)長(chang)電(dian)(dian)池(chi)的(de)(de)使用(yong)(yong)壽命很(hen)有好處。缺(que)點就是(shi)充(chong)(chong)(chong)(chong)電(dian)(dian)時間太長(chang),特別是(shi)電(dian)(dian)池(chi)數量較多的(de)(de)情況下有點力不從心。

       快(kuai)充(chong)(chong)(chong)(chong)(chong)一般都(dou)采用脈沖(chong)大(da)(da)電(dian)流(liu)充(chong)(chong)(chong)(chong)(chong)電(dian)，但由(you)于電(dian)池(chi)在(zai)大(da)(da)電(dian)流(liu)充(chong)(chong)(chong)(chong)(chong)電(dian)過(guo)程中(zhong)會產生(sheng)極化反應，導致電(dian)池(chi)溫度迅速升高，充(chong)(chong)(chong)(chong)(chong)滿后(hou)若再繼續加電(dian)就有可能發生(sheng)爆炸(zha)和燃燒，所以(yi)快(kuai)充(chong)(chong)(chong)(chong)(chong)還(huan)采用專用芯片來控(kong)制充(chong)(chong)(chong)(chong)(chong)電(dian)過(guo)程，實時監控(kong)電(dian)池(chi)電(dian)量，一旦充(chong)(chong)(chong)(chong)(chong)滿就自動(dong)停止充(chong)(chong)(chong)(chong)(chong)電(dian)，使整個(ge)充(chong)(chong)(chong)(chong)(chong)電(dian)過(guo)程變得安(an)全、高效。快(kuai)充(chong)(chong)(chong)(chong)(chong)適合(he)電(dian)池(chi)數量較多或心急的玩家(jia)。缺點便是無法避免的大(da)(da)發熱量，對(dui)電(dian)池(chi)壽命有一定的影響.價格也(ye)比慢充(chong)(chong)(chong)(chong)(chong)貴一些(xie)。

       類(lei)型(xing)：前文提到(dao)的(de)(de)(de)快充(chong)(chong)和慢(man)充(chong)(chong)，也是(shi)(shi)(shi)挑選(xuan)充(chong)(chong)電(dian)(dian)器(qi)的(de)(de)(de)一個重要(yao)標準。兩(liang)者比(bi)較起來(lai)，快充(chong)(chong)的(de)(de)(de)缺(que)點是(shi)(shi)(shi)對電(dian)(dian)池的(de)(de)(de)壽(shou)命(ming)(ming)有所影響以(yi)及價格較高。不(bu)過在(zai)這個效(xiao)率(lv)至上的(de)(de)(de)時代，快充(chong)(chong)的(de)(de)(de)流行趨勢越(yue)來(lai)越(yue)明顯，因為(wei)使用快充(chong)(chong)所節省的(de)(de)(de)時間遠比(bi)電(dian)(dian)池所減(jian)少的(de)(de)(de)壽(shou)命(ming)(ming)來(lai)得重要(yao)。況且(qie)現在(zai)充(chong)(chong)電(dian)(dian)電(dian)(dian)池的(de)(de)(de)價格也越(yue)來(lai)越(yue)低，所以(yi)在(zai)資金(jin)允許(xu)的(de)(de)(de)情況下，最好(hao)選(xuan)擇快充(chong)(chong)。 （質量(liang)較差(cha)的(de)(de)(de)充(chong)(chong)電(dian)(dian)器(qi)內(nei)部構造(zao)極為(wei)簡單，電(dian)(dian)路板(ban)的(de)(de)(de)工藝更是(shi)(shi)(shi)糟糕，因此如果(guo)是(shi)(shi)(shi)買非(fei)名牌充(chong)(chong)電(dian)(dian)器(qi)的(de)(de)(de)話，開蓋看(kan)看(kan)還是(shi)(shi)(shi)有必要(yao)的(de)(de)(de)）

      外觀(guan)及內(nei)在(zai)品質：優秀的(de)(de)(de)(de)(de)做(zuo)工在(zai)很(hen)大程度上(shang)(shang)也是廠商實力(li)的(de)(de)(de)(de)(de)體現(xian)，而用料(liao)的(de)(de)(de)(de)(de)質量則(ze)是安全使用的(de)(de)(de)(de)(de)保障。我們在(zai)購買(mai)時，可注意一(yi)下充(chong)(chong)電(dian)(dian)器(qi)(qi)外觀(guan)的(de)(de)(de)(de)(de)光澤度、邊(bian)角和小地(di)方的(de)(de)(de)(de)(de)精細程度；掂(dian)掂(dian)分量做(zuo)一(yi)下比較，一(yi)般來說(shuo)同(tong)類型產品偷工減料(liao)者重(zhong)量相對(dui)較輕。須要注意的(de)(de)(de)(de)(de)是，快充(chong)(chong)由(you)于(yu)(yu)使用了控制芯(xin)片(pian)以及開關電(dian)(dian)源，重(zhong)量有可能會比慢充(chong)(chong)輕，所以掂(dian)重(zhong)量這(zhe)種差(cha)別(bie)方法(fa)最(zui)適合于(yu)(yu)同(tong)一(yi)類型的(de)(de)(de)(de)(de)充(chong)(chong)電(dian)(dian)器(qi)(qi)。在(zai)條件(jian)允(yun)許的(de)(de)(de)(de)(de)情(qing)況下可以要求商家將充(chong)(chong)電(dian)(dian)器(qi)(qi)打(da)開觀(guan)看(kan)內(nei)部結構(gou)，看(kan)看(kan)內(nei)部電(dian)(dian)路板電(dian)(dian)子元件(jian)的(de)(de)(de)(de)(de)排(pai)列、焊接工藝等(deng)方面，以確(que)保貨真價(jia)實。另外,最(zui)好(hao)將自己(ji)使用的(de)(de)(de)(de)(de)充(chong)(chong)電(dian)(dian)電(dian)(dian)池帶(dai)上(shang)(shang)，在(zai)商家處充(chong)(chong)電(dian)(dian)30分鐘左右,觀(guan)察(cha)一(yi)下電(dian)(dian)池的(de)(de)(de)(de)(de)發(fa)熱(re)量--質量好(hao)的(de)(de)(de)(de)(de)充(chong)(chong)電(dian)(dian)器(qi)(qi)能夠有效地(di)控制發(fa)熱(re)量,而劣質充(chong)(chong)電(dian)(dian)器(qi)(qi)則(ze)有可能將電(dian)(dian)池充(chong)(chong)得(de)滾燙(tang)--這(zhe)種現(xian)象特別(bie)容易出現(xian)在(zai)劣質快充(chong)(chong)上(shang)(shang)。這(zhe)樣(yang)的(de)(de)(de)(de)(de)產品一(yi)定不(bu)能購買(mai)。

    易(yi)用(yong)性：為了日后使用(yong)更加(jia)方便，在(zai)選擇(ze)充(chong)電器時最好多考慮一下產品(pin)的易(yi)用(yong)性。

    有的充電器只能為AA電池充電，而有些充電器不但能充AA電池，還可以為AAA電池充電，如果有多種型號的充電電池，可以選擇這種充電器。 常見的充電器一般可以同時為4節電池充電，手中的電池比較多，同時又不愿意為大量電池充電而長時間等待的用戶，可以選擇有6個或8個甚至更多充電插槽的充電器，當然，這類充電器的體積會大一些，不便攜帶，價格也自然會高一些。 很多充電器由于電路設計的關系,只能為偶數節電池如2節、4節電池成對地充電，這對于某些使用單個電池的用戶來說很不方便，于是市場有一些充電器在電路設計時考慮到了這一問題，它們可以為1節、3節等奇數節電池充電。在購買時建議選擇這類充電器，以便日后的使用。由于鎳氫和鎳鎘電池的結構相近，所以有的鎳氫電池充電器在(zai)設計時還考慮到了對(dui)鎳(nie)鎘電池(chi)(chi)的(de)兼容，如果想讓(rang)手中的(de)老(lao)電池(chi)(chi)再次煥(huan)發青春，這類充電器倒是一(yi)個不(bu)錯的(de)選擇。

      除此(ci)以(yi)外,還有一個小地方要(yao)提醒大家注(zhu)意(yi)，有的(de)充電器為方便(bian)攜(xie)帶，將插頭(tou)與機身(shen)做在(zai)(zai)了一起，不(bu)過在(zai)(zai)使用時往往會在(zai)(zai)多(duo)用插線(xian)板上占去兩個甚至更多(duo)插座的(de)位置，對(dui)于插座比較集中的(de)朋友來說，充電時就(jiu)不(bu)得不(bu)把其(qi)他的(de)插頭(tou)拔掉，很不(bu)方便(bian)。如(ru)果不(bu)想為充電器另行(xing)購買一個插線(xian)板的(de)話，就(jiu)應該(gai)選擇(ze)非一體式的(de)充電器了。