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(pei)(pei)銷售的套(tao)裝(zhuang)電(dian)(dian)(dian)池工作穩定(ding)，但(dan)價格(ge)較高(gao)，因此(ci)不少玩家都(dou)把(ba)目光瞄(miao)準了價格(ge)相(xiang)對(dui)較低(di)的零售電(dian)(dian)(dian)池或(huo)價格(ge)更為便宜的工業(ye)包裝(zhuang)電(dian)(dian)(dian)池--這些電(dian)(dian)(dian)池都(dou)沒有充電(dian)(dian)(dian)器(qi)(qi)(qi)搭配(pei)(pei)銷售。另外(wai)，一部分玩家電(dian)(dian)(dian)池使用量(liang)較大，一個充電(dian)(dian)(dian)器(qi)(qi)(qi)已經不能滿足日常(chang)需求，所以另行購買(mai)電(dian)(dian)(dian)池充電(dian)(dian)(dian)器(qi)(qi)(qi)是必要的。因而(er)如何去選擇(ze)讓自己(ji)滿意(yi)的鎳氫(qing)電(dian)(dian)(dian)池充電(dian)(dian)(dian)器(qi)(qi)(qi)便成了重(zhong)要的事情。

       劣(lie)質(zhi)(zhi)充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)(de)危(wei)害： 一個(ge)充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)(de)價格一般(ban)都在幾十(shi)元(yuan)到數百元(yuan)之間，比起數碼相機的(de)(de)(de)價格來說真是顯得有些(xie)微不(bu)(bu)足(zu)道。但(dan)這個(ge)小(xiao)小(xiao)的(de)(de)(de)充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)如果質(zhi)(zhi)量不(bu)(bu)過(guo)關的(de)(de)(de)話(hua)，給用(yong)戶帶來的(de)(de)(de)危(wei)害卻不(bu)(bu)小(xiao)。首先(xian)，劣(lie)質(zhi)(zhi)充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)由于(yu)(yu)配件質(zhi)(zhi)量不(bu)(bu)過(guo)關或電(dian)(dian)(dian)(dian)氣(qi)性能不(bu)(bu)良，自(zi)身(shen)容易出現短(duan)路、過(guo)熱(re)燒(shao)毀等(deng)故障，輕則(ze)讓用(yong)戶損失充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)，重(zhong)則(ze)會引起各種(zhong)災(zai)難性的(de)(de)(de)危(wei)害如火災(zai)等(deng)；其次，劣(lie)質(zhi)(zhi)充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)由于(yu)(yu)輸出電(dian)(dian)(dian)(dian)流(liu)不(bu)(bu)穩定(ding)或不(bu)(bu)符合規格，會引起電(dian)(dian)(dian)(dian)池(chi)過(guo)熱(re)、充(chong)(chong)電(dian)(dian)(dian)(dian)不(bu)(bu)完(wan)全等(deng)故障，輕則(ze)影響使(shi)用(yong)，重(zhong)則(ze)會引起電(dian)(dian)(dian)(dian)池(chi)爆炸等(deng)危(wei)險。由此看來，充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)質(zhi)(zhi)量的(de)(de)(de)好壞的(de)(de)(de)確(que)要引起消費者(zhe)的(de)(de)(de)注意(yi)。作一個(ge)形象的(de)(de)(de)比喻，電(dian)(dian)(dian)(dian)池(chi)好比戰場上的(de)(de)(de)士兵，而充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)就好比后勤部隊--要讓士兵在火線上隨時保持良好的(de)(de)(de)戰斗狀態，后勤部隊至關重(zhong)要。下面就讓我們一步(bu)步(bu)來選購充(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)(qi)。

      充(chong)(chong)電(dian)(dian)(dian)器的分類(lei)：充(chong)(chong)電(dian)(dian)(dian)器通常按充(chong)(chong)電(dian)(dian)(dian)時間(jian)(jian)來分類(lei)，有"快速(su)充(chong)(chong)電(dian)(dian)(dian)器（以下(xia)簡稱快充(chong)(chong)）"和"慢速(su)充(chong)(chong)電(dian)(dian)(dian)器（以下(xia)簡稱慢充(chong)(chong)）"兩種(zhong)。鎳氫電(dian)(dian)(dian)池的充(chong)(chong)電(dian)(dian)(dian)時間(jian)(jian)基本上可按下(xia)列公(gong)式計算：充(chong)(chong)電(dian)(dian)(dian)時間(jian)(jian)（小時）≈效率系數(shu)(shu)×容量（mAh）÷充(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流(mA)  注：效率系數(shu)(shu)為1.2～1.5之間(jian)(jian)的一個不(bu)定數(shu)(shu)，因不(bu)同充(chong)(chong)電(dian)(dian)(dian)器而異。

      慢充(chong)(chong)一般采用(yong)恒(heng)流方式充(chong)(chong)電(dian)，且在電(dian)池(chi)充(chong)(chong)滿后(hou)自(zi)動轉為涓(juan)流充(chong)(chong)電(dian)狀態(tai)。慢充(chong)(chong)的(de)(de)優點(dian)(dian)是電(dian)路設計簡單，易于(yu)實現，價格(ge)也較低;由于(yu)采用(yong)小(xiao)電(dian)流恒(heng)流充(chong)(chong)電(dian)，有效地(di)降(jiang)低了電(dian)池(chi)在充(chong)(chong)電(dian)過(guo)程中(zhong)的(de)(de)發熱量，對延長(chang)電(dian)池(chi)的(de)(de)使用(yong)壽命很有好處(chu)。缺點(dian)(dian)就是充(chong)(chong)電(dian)時(shi)間太長(chang),特別是電(dian)池(chi)數量較多的(de)(de)情況下有點(dian)(dian)力不從心。

       快(kuai)充(chong)(chong)(chong)一(yi)般都采用(yong)脈沖(chong)大電(dian)流(liu)充(chong)(chong)(chong)電(dian)，但由(you)于(yu)電(dian)池在(zai)大電(dian)流(liu)充(chong)(chong)(chong)電(dian)過程(cheng)中會產生極(ji)化反應，導致電(dian)池溫(wen)度迅速升高，充(chong)(chong)(chong)滿(man)后若(ruo)再繼(ji)續加(jia)電(dian)就有可能(neng)發(fa)生爆炸和(he)燃燒，所以快(kuai)充(chong)(chong)(chong)還(huan)采用(yong)專用(yong)芯片(pian)來控(kong)制充(chong)(chong)(chong)電(dian)過程(cheng)，實時監(jian)控(kong)電(dian)池電(dian)量(liang)(liang)，一(yi)旦(dan)充(chong)(chong)(chong)滿(man)就自動停(ting)止(zhi)充(chong)(chong)(chong)電(dian)，使整(zheng)個(ge)充(chong)(chong)(chong)電(dian)過程(cheng)變得安全、高效。快(kuai)充(chong)(chong)(chong)適合電(dian)池數量(liang)(liang)較多或心(xin)急的玩(wan)家。缺點便是無法避(bi)免的大發(fa)熱量(liang)(liang)，對電(dian)池壽命有一(yi)定(ding)的影響.價格(ge)也(ye)比(bi)慢充(chong)(chong)(chong)貴一(yi)些。

       類型(xing)：前文(wen)提(ti)到的(de)(de)(de)(de)(de)快充(chong)(chong)(chong)和慢充(chong)(chong)(chong)，也是挑選充(chong)(chong)(chong)電(dian)器(qi)的(de)(de)(de)(de)(de)一個重(zhong)要(yao)標準(zhun)。兩者比較起來(lai)，快充(chong)(chong)(chong)的(de)(de)(de)(de)(de)缺點是對電(dian)池的(de)(de)(de)(de)(de)壽(shou)命有所影響以及價(jia)格較高。不過在(zai)這個效(xiao)率至(zhi)上的(de)(de)(de)(de)(de)時代，快充(chong)(chong)(chong)的(de)(de)(de)(de)(de)流行趨勢(shi)越來(lai)越明顯，因為使(shi)用快充(chong)(chong)(chong)所節省的(de)(de)(de)(de)(de)時間(jian)遠比電(dian)池所減(jian)少的(de)(de)(de)(de)(de)壽(shou)命來(lai)得重(zhong)要(yao)。況且(qie)現在(zai)充(chong)(chong)(chong)電(dian)電(dian)池的(de)(de)(de)(de)(de)價(jia)格也越來(lai)越低，所以在(zai)資金(jin)允許的(de)(de)(de)(de)(de)情況下，最(zui)好選擇(ze)快充(chong)(chong)(chong)。 （質量較差(cha)的(de)(de)(de)(de)(de)充(chong)(chong)(chong)電(dian)器(qi)內部(bu)構造極為簡單，電(dian)路板的(de)(de)(de)(de)(de)工藝更是糟糕，因此如果是買非(fei)名(ming)牌充(chong)(chong)(chong)電(dian)器(qi)的(de)(de)(de)(de)(de)話，開蓋看看還是有必要(yao)的(de)(de)(de)(de)(de)）

      外觀及內在(zai)(zai)品(pin)質(zhi)(zhi)：優(you)秀的(de)(de)(de)做工在(zai)(zai)很大程度(du)上也是廠商(shang)實(shi)力的(de)(de)(de)體現，而(er)用料的(de)(de)(de)質(zhi)(zhi)量(liang)(liang)(liang)則是安(an)全使(shi)用的(de)(de)(de)保障。我們在(zai)(zai)購買時，可注(zhu)(zhu)意一下(xia)(xia)充(chong)(chong)(chong)電(dian)(dian)(dian)器(qi)外觀的(de)(de)(de)光澤(ze)度(du)、邊角(jiao)和(he)小地方的(de)(de)(de)精細(xi)程度(du)；掂(dian)掂(dian)分(fen)量(liang)(liang)(liang)做一下(xia)(xia)比(bi)較，一般來說同(tong)類型(xing)產品(pin)偷工減料者重(zhong)量(liang)(liang)(liang)相對較輕(qing)。須要(yao)注(zhu)(zhu)意的(de)(de)(de)是，快(kuai)充(chong)(chong)(chong)由于(yu)使(shi)用了控制芯片(pian)以及開關電(dian)(dian)(dian)源，重(zhong)量(liang)(liang)(liang)有可能(neng)會比(bi)慢充(chong)(chong)(chong)輕(qing)，所以掂(dian)重(zhong)量(liang)(liang)(liang)這種差別(bie)方法(fa)最(zui)適合(he)于(yu)同(tong)一類型(xing)的(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)器(qi)。在(zai)(zai)條件允許(xu)的(de)(de)(de)情(qing)況下(xia)(xia)可以要(yao)求商(shang)家(jia)將(jiang)充(chong)(chong)(chong)電(dian)(dian)(dian)器(qi)打開觀看(kan)內部(bu)結構，看(kan)看(kan)內部(bu)電(dian)(dian)(dian)路板電(dian)(dian)(dian)子元件的(de)(de)(de)排列、焊接(jie)工藝等方面(mian)，以確保貨真價實(shi)。另外,最(zui)好將(jiang)自己(ji)使(shi)用的(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)池帶上，在(zai)(zai)商(shang)家(jia)處充(chong)(chong)(chong)電(dian)(dian)(dian)30分(fen)鐘左右,觀察一下(xia)(xia)電(dian)(dian)(dian)池的(de)(de)(de)發(fa)熱量(liang)(liang)(liang)--質(zhi)(zhi)量(liang)(liang)(liang)好的(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)器(qi)能(neng)夠(gou)有效地控制發(fa)熱量(liang)(liang)(liang),而(er)劣質(zhi)(zhi)充(chong)(chong)(chong)電(dian)(dian)(dian)器(qi)則有可能(neng)將(jiang)電(dian)(dian)(dian)池充(chong)(chong)(chong)得滾燙--這種現象特(te)別(bie)容易出(chu)現在(zai)(zai)劣質(zhi)(zhi)快(kuai)充(chong)(chong)(chong)上。這樣的(de)(de)(de)產品(pin)一定不(bu)能(neng)購買。

    易(yi)用(yong)性：為了日(ri)后使(shi)用(yong)更加(jia)方便(bian)，在(zai)選擇充電器時最好多(duo)考慮一(yi)下產(chan)品的易(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設(she)計時還考慮到(dao)了對鎳鎘電池(chi)的兼(jian)容(rong)，如(ru)果想讓手(shou)中的老電池(chi)再(zai)次煥(huan)發青春，這(zhe)類充電器倒是一(yi)個不錯的選(xuan)擇。

      除此以外,還(huan)有一(yi)個(ge)小(xiao)地方(fang)要(yao)提(ti)醒大家注意，有的(de)充(chong)電(dian)器(qi)為方(fang)便(bian)攜(xie)帶，將插頭與機(ji)身做在了一(yi)起，不過在使用(yong)時往往會(hui)在多用(yong)插線板上占去兩個(ge)甚至更多插座(zuo)的(de)位置，對于插座(zuo)比較集(ji)中的(de)朋友來說，充(chong)電(dian)時就不得不把其他(ta)的(de)插頭拔掉，很不方(fang)便(bian)。如果(guo)不想為充(chong)電(dian)器(qi)另(ling)行購買(mai)一(yi)個(ge)插線板的(de)話(hua)，就應該(gai)選(xuan)擇非一(yi)體式的(de)充(chong)電(dian)器(qi)了。