怎樣選擇合適的充電器？
用戶選擇充電器時(shi)自然會有不同的(de)偏好，這里的(de)建議(yi)著重(zhong)性能(neng)方面的(de)選擇。

1. 充電速度。 常見的充電器采用恒流充電方式，充電速度主要和充電器提供的(de)電(dian)(dian)(dian)(dian)(dian)流有(you)關(guan)。充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流越(yue)大(da)，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)速(su)度越(yue)快(kuai)(kuai)。而(er)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)時間(jian)的(de)長短除了和(he)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)速(su)度有(you)關(guan)，還(huan)要看電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)容量大(da)小。需要注意的(de)是，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流越(yue)大(da)，對充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器和(he)電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)內部體系(xi)設計(ji)品質要求越(yue)高。一般(ban)情(qing)況下，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流越(yue)大(da)，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過程中可(ke)能(neng)(neng)導致的(de)發熱越(yue)多(duo)，電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)性(xing)能(neng)(neng)可(ke)能(neng)(neng)受到的(de)損害越(yue)大(da)。品質低劣的(de)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器和(he)電(dian)(dian)(dian)(dian)(dian)池(chi)在(zai)大(da)電(dian)(dian)(dian)(dian)(dian)流快(kuai)(kuai)速(su)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)時很容易(yi)出(chu)現漏液(ye)等安(an)全性(xing)能(neng)(neng)方面的(de)問題。

2. 充電(dian)(dian)(dian)(dian)效率(lv) 充電(dian)(dian)(dian)(dian)時向電(dian)(dian)(dian)(dian)池輸(shu)入的能量(liang)不是(shi)(shi)全部轉(zhuan)化為電(dian)(dian)(dian)(dian)池儲存的能量(liang)，還有一部分是(shi)(shi)分別用于(yu)(yu)電(dian)(dian)(dian)(dian)池內(nei)部的副反應(ying)和轉(zhuan)化為充電(dian)(dian)(dian)(dian)過程(cheng)中的熱量(liang)，所以充電(dian)(dian)(dian)(dian)效率(lv)總是(shi)(shi)小于(yu)(yu)100%的。充電(dian)(dian)(dian)(dian)時充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流應(ying)控制在(zai)一定范圍內(nei)，充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流太大或太小，都(dou)會降(jiang)低充電(dian)(dian)(dian)(dian)效率(lv)。對于(yu)(yu)大電(dian)(dian)(dian)(dian)流的快速充電(dian)(dian)(dian)(dian)器(qi)來說，還需要對充電(dian)(dian)(dian)(dian)器(qi)的充電(dian)(dian)(dian)(dian)方(fang)式進行特(te)別的設計，以便提高充電(dian)(dian)(dian)(dian)效率(lv)。

3. 充電終止控制 小電流的充電器一般(ban)采用(yong)時(shi)間控制(zhi)方式。大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)快速充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器一般(ban)采用(yong)-△V控制(zhi)和(he)其他控制(zhi)方式相結合的(de)(de)設計(ji)，智能化(hua)程度(du)要(yao)高一些。 充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器提(ti)供的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)越大(da)，充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)終止控制(zhi)方式越復雜，成本和(he)價(jia)格越高。對于(yu)用(yong)戶來說，要(yao)依據(ju)自(zi)己的(de)(de)實(shi)際(ji)情況來進行(xing)選(xuan)(xuan)擇(ze)。如果使用(yong)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池容量不(bu)是很高，或者對充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)速度(du)并(bing)不(bu)特別看重，就(jiu)可以(yi)選(xuan)(xuan)擇(ze)普通的(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器；如果有必要(yao)選(xuan)(xuan)擇(ze)價(jia)格較高的(de)(de)快速充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器，最(zui)好(hao)對充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)性能多進行(xing)一些了解。比如，可以(yi)提(ti)供1000mA最(zui)大(da)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器，用(yong)來給600mAh容量的(de)(de)鎳氫電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，就(jiu)需要(yao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池是專門設計(ji)的(de)(de)適(shi)合大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池，或者要(yao)保證充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器可以(yi)提(ti)供更小的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)選(xuan)(xuan)擇(ze)。