現(xian)在(zai)市場上的(de)MP3屏幕越做越大(da)，功能(neng)越來越強，但有一項數據卻多年(nian)未變，甚(shen)至還(huan)有倒退(tui)。那就(jiu)是電(dian)(dian)池(chi)(chi)容量(liang)。為了追求更輕薄的(de)機身，更好的(de)便攜性，電(dian)(dian)池(chi)(chi)就(jiu)做出了犧(xi)牲。現(xian)在(zai)用MP3播放電(dian)(dian)影大(da)概可以看3~4小時(shi)(shi)，音樂12小時(shi)(shi)左右。像Q2標示(shi)續航50小時(shi)(shi)，是要在(zai)很嚴格的(de)條件下才能(neng)達成的(de)。比如(ru)，歌曲比特率，電(dian)(dian)池(chi)(chi)完(wan)美充電(dian)(dian)，音效關，音量(liang)限定(ding)等(deng)等(deng)。那么為了使(shi)用更長時(shi)(shi)間(jian)，給大(da)家講(jiang)講(jiang)怎(zen)么“伺候”電(dian)(dian)池(chi)(chi)。

    在討論鋰電池之前，我們先要明白鋰電池分為兩類：鋰電池和鋰離子電池。鋰電(dian)(dian)(dian)(dian)池就是電(dian)(dian)(dian)(dian)子表(biao)等產(chan)品中的紐(niu)扣(kou)電(dian)(dian)(dian)(dian)池，理論上也可(ke)以(yi)充電(dian)(dian)(dian)(dian)。可(ke)是不(bu)但效果不(bu)好，還容易(yi)短路(lu)，所(suo)以(yi)一般都(dou)是禁止充電(dian)(dian)(dian)(dian)的。后來經(jing)過索尼(ni)公司改(gai)進設計材料，發明鋰離(li)子電(dian)(dian)(dian)(dian)池。也就是我(wo)們(men)現在(zai)廣(guang)泛使用的鋰電(dian)(dian)(dian)(dian)池，安全性(xing)更高，壽命也更長。以(yi)下討(tao)論的鋰電(dian)(dian)(dian)(dian)池，均為鋰離(li)子電(dian)(dian)(dian)(dian)池。

    1.如何充電(dian)。

    傳說一：電池有記憶性，前三次充電必須充滿，至少12個小時！這種說法指的是鎳電池。鎳電池記憶性較強，一開始激活不充分會影響使用。鋰電池雖然(ran)也要激活，但(dan)很容易，經過3~5次正常充放電就可激活。其(qi)本身也沒有(you)記憶性。

經(jing)典SONY口(kou)香糖電池(chi)

    經典SONY口香糖電池，可以(yi)看到其(qi)明確注明為Ni-MH（鎳氫(qing)）電池。

    要注意(yi)(yi)，過長(chang)時間的(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)反而會對(dui)鋰電(dian)(dian)(dian)(dian)(dian)池(chi)造(zao)成傷害(hai)，所以(yi)(yi)絕大多(duo)數電(dian)(dian)(dian)(dian)(dian)子產品都(dou)有(you)充(chong)電(dian)(dian)(dian)(dian)(dian)保護的(de)(de)功能。當(dang)電(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)滿后(hou)，自(zi)動斷電(dian)(dian)(dian)(dian)(dian)。我們無法保證(zheng)充(chong)電(dian)(dian)(dian)(dian)(dian)保護功能一(yi)定靠的(de)(de)住，為了以(yi)(yi)防萬(wan)一(yi)，大家還是不要將電(dian)(dian)(dian)(dian)(dian)池(chi)長(chang)時間至于充(chong)電(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)。另外(wai)，有(you)些地方電(dian)(dian)(dian)(dian)(dian)壓不穩，鋰電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)耐波(bo)動性比較差，更長(chang)的(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)時間，意(yi)(yi)味著更容易(yi)受到傷害(hai)。

     2.什么時候充電(dian)。

    傳說二：電(dian)(dian)(dian)量(liang)要盡量(liang)用(yong)光，最好自動關機再(zai)充電(dian)(dian)(dian)。這(zhe)也是說鎳電(dian)(dian)(dian)池的。由于鎳電(dian)(dian)(dian)池的記憶性，所以每(mei)次都要用(yong)光電(dian)(dian)(dian)才能(neng)開始(shi)(shi)充電(dian)(dian)(dian)。有些人可能(neng)還(huan)記得，早(zao)期的手機充電(dian)(dian)(dian)器上還(huan)有“放電(dian)(dian)(dian)”這(zhe)一(yi)功能(neng)。但(dan)鋰(li)(li)電(dian)(dian)(dian)池完全不適用(yong)這(zhe)個規則，過分的放電(dian)(dian)(dian)反而對鋰(li)(li)電(dian)(dian)(dian)池有害。為了(le)保(bao)證(zheng)鋰(li)(li)電(dian)(dian)(dian)池的壽命，最好在提示(shi)電(dian)(dian)(dian)量(liang)低時就(jiu)開始(shi)(shi)充電(dian)(dian)(dian)。

Ni-Cd（鎳(nie)鎘）電池

    第一(yi)代充電(dian)(dian)電(dian)(dian)池(chi)，Ni-Cd（鎳鎘）電(dian)(dian)池(chi)。有記(ji)憶性且鎘對(dui)人體危害極大。

    說(shuo)一(yi)個真實的(de)例子。筆者有一(yi)次出(chu)去玩，手機沒有及時充(chong)電(dian)，導致電(dian)量完(wan)全(quan)用光(guang)。回來就充(chong)不上電(dian)了，不得不送客服檢修。這就是因為電(dian)池過度放電(dian)導致電(dian)壓過低，甚至不具備正(zheng)常充(chong)電(dian)條件(jian)。

PSP使用的Li-ion（鋰電(dian)池(chi)）

    3.使(shi)用中的注意事項。

    近幾年不斷(duan)聽說(shuo)手(shou)機電(dian)(dian)池(chi)(chi)爆炸的事(shi)。輕者(zhe)燒(shao)毀財物(wu)，重者(zhe)甚至燒(shao)傷使用(yong)(yong)者(zhe)。至于爆炸的元兇嘛，就是(shi)電(dian)(dian)池(chi)(chi)了(le)(le)(le)（廢(fei)話，沒聽說(shuo)主板能爆炸！）。這是(shi)因(yin)為鋰(li)電(dian)(dian)池(chi)(chi)中(zhong)的許(xu)多(duo)材料與(yu)水(shui)接觸(chu)后(hou)，可發生(sheng)劇烈的化(hua)學反應并釋(shi)放(fang)(fang)出(chu)(chu)大(da)量熱(re)(re)(re)，導致發熱(re)(re)(re)、燃燒(shao)。鋰(li)電(dian)(dian)池(chi)(chi)正(zheng)極的二(er)(er)氧化(hua)錳，只沾一小滴水(shui)便可出(chu)(chu)現(xian)發熱(re)(re)(re)現(xian)象。鋰(li)電(dian)(dian)池(chi)(chi)中(zhong)的氯(lv)化(hua)亞硫與(yu)水(shui)接觸(chu)后(hou)，在生(sheng)成鹽酸和(he)二(er)(er)氧化(hua)硫的同(tong)時釋(shi)放(fang)(fang)熱(re)(re)(re)能。明白了(le)(le)(le)道理，防(fang)范(fan)方法也很簡(jian)單了(le)(le)(le)，只要(yao)注意防(fang)水(shui)防(fang)潮就可以了(le)(le)(le)。不用(yong)(yong)的鋰(li)電(dian)(dian)池(chi)(chi)產品，一定要(yao)把電(dian)(dian)池(chi)(chi)取出(chu)(chu)單獨放(fang)(fang)置。冬季馬(ma)上就要(yao)到了(le)(le)(le)，從室外(wai)(wai)回來后(hou)一定要(yao)注意不要(yao)把MP3、手(shou)機等產品繼續放(fang)(fang)在衣服兜里。冷凝(ning)現(xian)象會使產品內外(wai)(wai)都(dou)變(bian)得(de)很潮濕，要(yao)及(ji)時通風(feng)干燥。就算電(dian)(dian)池(chi)(chi)沒問題(ti)，也有可能造成短(duan)路，損壞設備。

被電池燒毀的褲子

    有些網(wang)友也許要問(wen)，可以邊充(chong)電(dian)(dian)(dian)邊看電(dian)(dian)(dian)影(ying)嗎(ma)？這個問(wen)題(ti)不能一概而論。一些產品的AC電(dian)(dian)(dian)路和電(dian)(dian)(dian)池電(dian)(dian)(dian)路分開設計，邊使用邊充(chong)電(dian)(dian)(dian)完全沒(mei)問(wen)題(ti)。但有的就不可以，如(ru)果說(shuo)明(ming)書(shu)中沒(mei)有寫明(ming)，為(wei)了安全起見，最好(hao)還是咨詢客服吧。

    鋰電池小(xiao)常識

    鋰電(dian)池是由鋰金屬或鋰合金為負極材料、使(shi)用非水電(dian)解質溶液的電(dian)池。反映過程為：

    Li+MnO2=LiMnO2該反應為(wei)氧化還原反應，放電。

    鋰(li)電池雖然近年才(cai)(cai)得以(yi)廣(guang)(guang)泛應(ying)用(yong)，但它的(de)歷(li)史很(hen)長(chang)。第一塊鋰(li)電池是由大發(fa)明(ming)家愛(ai)迪生(sheng)發(fa)明(ming)的(de)。由于(yu)鋰(li)金屬非常活潑，對(dui)制(zhi)造工(gong)藝提出很(hen)高的(de)要求。早(zao)期(qi)只使用(yong)在航(hang)空航(hang)天或者(zhe)軍事領域，隨著制(zhi)造工(gong)藝的(de)提升(sheng)，才(cai)(cai)得以(yi)在民(min)用(yong)設備上推(tui)廣(guang)(guang)。