怎樣選擇合適的充電器？
用戶選擇充電器時自然(ran)會有不(bu)同的偏好，這(zhe)里的建(jian)議(yi)著重性能方面的選擇。

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)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)有關(guan)。充電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)越大(da)(da)，充電(dian)(dian)(dian)(dian)(dian)(dian)速(su)(su)度越快。而充電(dian)(dian)(dian)(dian)(dian)(dian)時(shi)間的(de)長短除了和(he)充電(dian)(dian)(dian)(dian)(dian)(dian)速(su)(su)度有關(guan)，還要(yao)看電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)容(rong)量大(da)(da)小。需要(yao)注意(yi)的(de)是，充電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)越大(da)(da)，對充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)和(he)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)內部體系設計品質要(yao)求越高。一般(ban)情況下，充電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)越大(da)(da)，充電(dian)(dian)(dian)(dian)(dian)(dian)過程中可能(neng)(neng)導致(zhi)的(de)發熱越多(duo)，電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)性能(neng)(neng)可能(neng)(neng)受到(dao)的(de)損害越大(da)(da)。品質低劣的(de)充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)和(he)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)在大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)快速(su)(su)充電(dian)(dian)(dian)(dian)(dian)(dian)時(shi)很容(rong)易出現漏液(ye)等(deng)安全性能(neng)(neng)方面的(de)問題。

2. 充(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)率(lv)(lv) 充(chong)(chong)電(dian)(dian)(dian)(dian)時向電(dian)(dian)(dian)(dian)池輸入的(de)能量不是全部轉化(hua)為電(dian)(dian)(dian)(dian)池儲(chu)存的(de)能量，還有(you)一(yi)(yi)部分是分別用(yong)于(yu)電(dian)(dian)(dian)(dian)池內(nei)部的(de)副(fu)反應和轉化(hua)為充(chong)(chong)電(dian)(dian)(dian)(dian)過程中的(de)熱量，所以充(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)率(lv)(lv)總是小于(yu)100%的(de)。充(chong)(chong)電(dian)(dian)(dian)(dian)時充(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流應控制在一(yi)(yi)定范圍內(nei)，充(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流太大或太小，都會降低充(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)率(lv)(lv)。對于(yu)大電(dian)(dian)(dian)(dian)流的(de)快速充(chong)(chong)電(dian)(dian)(dian)(dian)器來說，還需要對充(chong)(chong)電(dian)(dian)(dian)(dian)器的(de)充(chong)(chong)電(dian)(dian)(dian)(dian)方式進行特別的(de)設計，以便提高充(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)率(lv)(lv)。

3. 充電終止控制 小電流的充電器一(yi)般(ban)采用(yong)時間控(kong)制(zhi)方式。大(da)電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)快速充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)一(yi)般(ban)采用(yong)-△V控(kong)制(zhi)和(he)其(qi)他控(kong)制(zhi)方式相結合(he)的(de)(de)(de)(de)(de)設計(ji)(ji)，智能化程度(du)要(yao)(yao)(yao)高(gao)一(yi)些。 充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)提供(gong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)越大(da)，充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)終(zhong)止控(kong)制(zhi)方式越復(fu)雜，成本和(he)價(jia)格越高(gao)。對(dui)(dui)于用(yong)戶(hu)來(lai)說，要(yao)(yao)(yao)依(yi)據自己(ji)的(de)(de)(de)(de)(de)實(shi)際情(qing)況來(lai)進(jin)行(xing)(xing)選擇(ze)。如果(guo)使用(yong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)池(chi)(chi)容(rong)量(liang)不(bu)(bu)是很(hen)高(gao)，或(huo)者(zhe)對(dui)(dui)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)速度(du)并(bing)不(bu)(bu)特別看重，就(jiu)可(ke)以(yi)選擇(ze)普通(tong)的(de)(de)(de)(de)(de)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)；如果(guo)有必要(yao)(yao)(yao)選擇(ze)價(jia)格較高(gao)的(de)(de)(de)(de)(de)快速充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)，最(zui)好對(dui)(dui)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)和(he)電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)(de)性能多(duo)進(jin)行(xing)(xing)一(yi)些了解。比如，可(ke)以(yi)提供(gong)1000mA最(zui)大(da)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)，用(yong)來(lai)給600mAh容(rong)量(liang)的(de)(de)(de)(de)(de)鎳氫電(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)，就(jiu)需要(yao)(yao)(yao)電(dian)(dian)(dian)(dian)池(chi)(chi)是專門設計(ji)(ji)的(de)(de)(de)(de)(de)適合(he)大(da)電(dian)(dian)(dian)(dian)流(liu)(liu)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)池(chi)(chi)，或(huo)者(zhe)要(yao)(yao)(yao)保證充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器(qi)可(ke)以(yi)提供(gong)更小的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)選擇(ze)。