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(pian)好，這里的(de)建議著重性能方面的(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(ti)供的(de)(de)(de)電(dian)(dian)流有關(guan)。充(chong)(chong)電(dian)(dian)電(dian)(dian)流越(yue)(yue)大，充(chong)(chong)電(dian)(dian)速度越(yue)(yue)快(kuai)。而充(chong)(chong)電(dian)(dian)時間的(de)(de)(de)長短(duan)除了(le)和充(chong)(chong)電(dian)(dian)速度有關(guan)，還要(yao)看電(dian)(dian)池的(de)(de)(de)容量大小。需要(yao)注意的(de)(de)(de)是(shi)，充(chong)(chong)電(dian)(dian)電(dian)(dian)流越(yue)(yue)大，對充(chong)(chong)電(dian)(dian)器和電(dian)(dian)池的(de)(de)(de)內部體系設計(ji)品(pin)質(zhi)要(yao)求越(yue)(yue)高。一般情況(kuang)下，充(chong)(chong)電(dian)(dian)電(dian)(dian)流越(yue)(yue)大，充(chong)(chong)電(dian)(dian)過程中可能導致的(de)(de)(de)發熱越(yue)(yue)多，電(dian)(dian)池的(de)(de)(de)性能可能受到的(de)(de)(de)損害越(yue)(yue)大。品(pin)質(zhi)低劣的(de)(de)(de)充(chong)(chong)電(dian)(dian)器和電(dian)(dian)池在大電(dian)(dian)流快(kuai)速充(chong)(chong)電(dian)(dian)時很容易出現漏(lou)液等安(an)全性能方(fang)面的(de)(de)(de)問題。

2. 充電(dian)(dian)(dian)效(xiao)(xiao)率 充電(dian)(dian)(dian)時向(xiang)電(dian)(dian)(dian)池(chi)(chi)輸入的(de)(de)能(neng)量不是全部轉(zhuan)化(hua)為電(dian)(dian)(dian)池(chi)(chi)儲(chu)存的(de)(de)能(neng)量，還有一(yi)部分是分別(bie)(bie)用于(yu)電(dian)(dian)(dian)池(chi)(chi)內部的(de)(de)副反應和轉(zhuan)化(hua)為充電(dian)(dian)(dian)過程(cheng)中的(de)(de)熱量，所以(yi)充電(dian)(dian)(dian)效(xiao)(xiao)率總(zong)是小于(yu)100%的(de)(de)。充電(dian)(dian)(dian)時充電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)應控制在(zai)一(yi)定范圍內，充電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)太(tai)大或太(tai)小，都會降低充電(dian)(dian)(dian)效(xiao)(xiao)率。對于(yu)大電(dian)(dian)(dian)流(liu)的(de)(de)快速充電(dian)(dian)(dian)器來說，還需(xu)要(yao)對充電(dian)(dian)(dian)器的(de)(de)充電(dian)(dian)(dian)方(fang)式進(jin)行特(te)別(bie)(bie)的(de)(de)設計，以(yi)便提高充電(dian)(dian)(dian)效(xiao)(xiao)率。

3. 充電終止控制 小電流的充電器一(yi)般(ban)采用(yong)(yong)(yong)時間控制方式。大電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)(de)(de)(de)快(kuai)速(su)充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)一(yi)般(ban)采用(yong)(yong)(yong)-△V控制和其(qi)他控制方式相結合的(de)(de)(de)(de)(de)(de)設(she)計(ji)，智能化程度要(yao)(yao)(yao)高一(yi)些。 充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)提供的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流越(yue)(yue)(yue)大，充電(dian)(dian)(dian)(dian)(dian)(dian)終止控制方式越(yue)(yue)(yue)復雜，成本和價格越(yue)(yue)(yue)高。對于用(yong)(yong)(yong)戶來說，要(yao)(yao)(yao)依(yi)據(ju)自(zi)己的(de)(de)(de)(de)(de)(de)實際情況來進行(xing)選(xuan)擇(ze)。如果(guo)(guo)使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)池容量不是很高，或(huo)者對充電(dian)(dian)(dian)(dian)(dian)(dian)速(su)度并不特別看重，就(jiu)可(ke)以(yi)(yi)選(xuan)擇(ze)普通(tong)的(de)(de)(de)(de)(de)(de)充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)；如果(guo)(guo)有必要(yao)(yao)(yao)選(xuan)擇(ze)價格較高的(de)(de)(de)(de)(de)(de)快(kuai)速(su)充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)，最好(hao)對充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)和電(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)(de)(de)(de)(de)性能多進行(xing)一(yi)些了解。比如，可(ke)以(yi)(yi)提供1000mA最大充電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)(de)(de)(de)充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)，用(yong)(yong)(yong)來給600mAh容量的(de)(de)(de)(de)(de)(de)鎳氫電(dian)(dian)(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)(dian)(dian)，就(jiu)需要(yao)(yao)(yao)電(dian)(dian)(dian)(dian)(dian)(dian)池是專門設(she)計(ji)的(de)(de)(de)(de)(de)(de)適(shi)合大電(dian)(dian)(dian)(dian)(dian)(dian)流充電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)池，或(huo)者要(yao)(yao)(yao)保(bao)證充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)可(ke)以(yi)(yi)提供更小的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流選(xuan)擇(ze)。