所有手機充電器其實都是由一個穩定電源（主要是穩壓電源、提供穩定工作電壓和足夠的電流）加上必要的恒流、限(xian)壓、限(xian)時等(deng)控制電(dian)路構(gou)成(cheng)。

      原裝充電器（指線充(chong)）上所標注的(de)輸(shu)出參(can)數：比如輸(shu)出4。4V/1A、輸(shu)出5.9V/400mA……就是指內部穩壓電源的(de)相關參(can)數。明白了(le)這個(ge)道理，你很會知道一(yi)個(ge)（品質好的(de)）手機充(chong)電器很容(rong)易改成一(yi)個(ge)質量優良的(de)穩壓電源！ 比如輸(shu)出4.4V可以給(gei)4.5V的(de)設備用，5.9V的(de)可以給(gei)6V的(de)設備用……

手機常用鋰離子（lion）電池的充電器采(cai)用(yong)(yong)(yong)的是(shi)恒(heng)流限壓充(chong)電(dian)(dian)(dian)(dian)制，充(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流一般(ban)采(cai)用(yong)(yong)(yong)C2左(zuo)右(you)----即采(cai)用(yong)(yong)(yong)兩小時充(chong)電(dian)(dian)(dian)(dian)率(lv)，比(bi)如500mah電(dian)(dian)(dian)(dian)池采(cai)用(yong)(yong)(yong)250ma充(chong)電(dian)(dian)(dian)(dian)大約兩小時達到(dao)4。2V后(hou)再恒(heng)壓充(chong)電(dian)(dian)(dian)(dian)。

lion電(dian)(dian)(dian)(dian)池并不適合采(cai)用NIMH電(dian)(dian)(dian)(dian)池高級快速充(chong)(chong)電(dian)(dian)(dian)(dian)器所用的-DV/DT檢測快速充(chong)(chong)電(dian)(dian)(dian)(dian)方式，因為lion電(dian)(dian)(dian)(dian)池對充(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流有嚴(yan)格的限制.鋰離子(zi)（Li+）非(fei)常活潑，大電(dian)(dian)(dian)(dian)流充(chong)(chong)電(dian)(dian)(dian)(dian)很容易產生危(wei)險。 

 有機會接觸國內最著名(ming)的lion離子電芯廠家的技術人員，根據他(ta)們提供的破壞(huai)性實驗報告情(qing)(qing)況(kuang)：一般(ban)情(qing)(qing)況(kuang)下lion電池(chi)（電芯）在(zai)(zai)放電情(qing)(qing)況(kuang)（包括短路(lu)）一般(ban)都不(bu)會發(fa)生爆炸(zha)，但有可能出現過熱和燃燒，但在(zai)(zai)比較(jiao)嚴重的過流充電情(qing)(qing)況(kuang)，就非(fei)常容易發(fa)生爆炸(zha)！

目前市場上出(chu)現(xian)標(biao)稱可以適合250mah---2500mah電(dian)池充電(dian)的(de)“萬(wan)能手機充電(dian)器”，其(qi)實是(shi)非常危(wei)險的(de)，它(ta)缺(que)乏對(dui)電(dian)池容量的(de)檢(jian)測，采用固定(ding)的(de)輸(shu)出(chu)電(dian)流，對(dui)不(bu)同的(de)電(dian)池而言(yan)，不(bu)是(shi)導致(zhi)充電(dian)時間過長就是(shi)導致(zhi)過流充電(dian)。

現在(zai)的(de)(de)(de)(de)(de)USB手機充電(dian)(dian)(dian)(dian)器，只不利用(yong)了電(dian)(dian)(dian)(dian)腦USB口所(suo)具備的(de)(de)(de)(de)(de)比較(jiao)(jiao)穩定的(de)(de)(de)(de)(de)來自電(dian)(dian)(dian)(dian)腦電(dian)(dian)(dian)(dian)源(yuan)的(de)(de)(de)(de)(de)5。0v電(dian)(dian)(dian)(dian)壓作(zuo)為充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓源(yuan)，再同(tong)樣輔以相(xiang)關的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)路而(er)構(gou)成USB手機充電(dian)(dian)(dian)(dian)器，其輸(shu)出品質除(chu)受制于USB口最大輸(shu)出電(dian)(dian)(dian)(dian)流外，關鍵就是取決于充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)路本(ben)身的(de)(de)(de)(de)(de)設(she)計和材料的(de)(de)(de)(de)(de)優劣了。所(suo)以，大家要(yao)買設(she)計比較(jiao)(jiao)合(he)理(li)、信(xin)譽好的(de)(de)(de)(de)(de)名牌大廠的(de)(de)(de)(de)(de)產品。

                                                                                                                             本文摘自于全球(qiu)電池網(wang)