怎樣選擇合適的充電器？
用戶選擇充電器時自然會有不同的偏好，這里的建(jian)議著重(zhong)性能方面的選(xuan)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)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)有(you)關。充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)越(yue)(yue)大(da)(da)，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)速(su)(su)度越(yue)(yue)快。而充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)時間的(de)(de)(de)(de)長短除(chu)了和(he)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)速(su)(su)度有(you)關，還要(yao)看電(dian)(dian)(dian)(dian)(dian)池的(de)(de)(de)(de)容量大(da)(da)小。需要(yao)注意的(de)(de)(de)(de)是，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)越(yue)(yue)大(da)(da)，對充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器和(he)電(dian)(dian)(dian)(dian)(dian)池的(de)(de)(de)(de)內部體系設計(ji)品(pin)質要(yao)求越(yue)(yue)高。一(yi)般(ban)情況下，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)越(yue)(yue)大(da)(da)，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過程中可能(neng)導致的(de)(de)(de)(de)發(fa)熱越(yue)(yue)多，電(dian)(dian)(dian)(dian)(dian)池的(de)(de)(de)(de)性能(neng)可能(neng)受到的(de)(de)(de)(de)損害越(yue)(yue)大(da)(da)。品(pin)質低劣的(de)(de)(de)(de)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)器和(he)電(dian)(dian)(dian)(dian)(dian)池在(zai)大(da)(da)電(dian)(dian)(dian)(dian)(dian)流(liu)快速(su)(su)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)時很容易出現漏液等安全(quan)性能(neng)方(fang)面(mian)的(de)(de)(de)(de)問(wen)題。

2. 充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)(xiao)率(lv) 充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)時向電(dian)(dian)(dian)(dian)池(chi)輸(shu)入的(de)(de)(de)能量不是(shi)全部(bu)轉化(hua)為(wei)電(dian)(dian)(dian)(dian)池(chi)儲存(cun)的(de)(de)(de)能量，還有一(yi)部(bu)分是(shi)分別(bie)用于電(dian)(dian)(dian)(dian)池(chi)內(nei)部(bu)的(de)(de)(de)副反應(ying)和轉化(hua)為(wei)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)過程中的(de)(de)(de)熱量，所以充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)(xiao)率(lv)總是(shi)小于100%的(de)(de)(de)。充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)時充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)應(ying)控制在一(yi)定范圍內(nei)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)太大或太小，都會降低充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)(xiao)率(lv)。對(dui)于大電(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)快速充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器來說，還需要對(dui)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器的(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)方(fang)式進行特別(bie)的(de)(de)(de)設計，以便提高充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)(xiao)率(lv)。

3. 充電終止控制 小電流的充電器一(yi)(yi)(yi)般采用(yong)時間控(kong)制方式(shi)。大(da)電(dian)(dian)(dian)流的快速(su)(su)充(chong)電(dian)(dian)(dian)器(qi)一(yi)(yi)(yi)般采用(yong)-△V控(kong)制和(he)其他控(kong)制方式(shi)相結(jie)合(he)的設計(ji)，智能(neng)化程(cheng)度(du)要(yao)高(gao)一(yi)(yi)(yi)些(xie)。 充(chong)電(dian)(dian)(dian)器(qi)提供(gong)的電(dian)(dian)(dian)流越大(da)，充(chong)電(dian)(dian)(dian)終止控(kong)制方式(shi)越復雜，成本和(he)價(jia)(jia)格越高(gao)。對(dui)于用(yong)戶來說，要(yao)依(yi)據自己的實際情況(kuang)來進(jin)行選(xuan)(xuan)擇(ze)。如果(guo)(guo)使用(yong)的電(dian)(dian)(dian)池容量不是很高(gao)，或者對(dui)充(chong)電(dian)(dian)(dian)速(su)(su)度(du)并(bing)不特別(bie)看重，就可以(yi)(yi)選(xuan)(xuan)擇(ze)普通的充(chong)電(dian)(dian)(dian)器(qi)；如果(guo)(guo)有必要(yao)選(xuan)(xuan)擇(ze)價(jia)(jia)格較高(gao)的快速(su)(su)充(chong)電(dian)(dian)(dian)器(qi)，最好(hao)對(dui)充(chong)電(dian)(dian)(dian)器(qi)和(he)電(dian)(dian)(dian)池的性(xing)能(neng)多進(jin)行一(yi)(yi)(yi)些(xie)了解。比如，可以(yi)(yi)提供(gong)1000mA最大(da)充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流的充(chong)電(dian)(dian)(dian)器(qi)，用(yong)來給600mAh容量的鎳氫電(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)，就需要(yao)電(dian)(dian)(dian)池是專門設計(ji)的適合(he)大(da)電(dian)(dian)(dian)流充(chong)電(dian)(dian)(dian)的電(dian)(dian)(dian)池，或者要(yao)保證充(chong)電(dian)(dian)(dian)器(qi)可以(yi)(yi)提供(gong)更小(xiao)的電(dian)(dian)(dian)流選(xuan)(xuan)擇(ze)。