筆記本電池的作用是使筆記本電腦在沒有交流電源的情況下可以待機工作,它主要是靠里面的電芯來維持能量,也可以說電芯的質量決定了電池的質量,正常的筆記本電腦電池,其待機時間應不低于2h。使用可充電電池是筆記本電腦相對臺式機的優勢之一,它可以極大地方便筆記本電腦的在各種環境下使用。最早推出的電池是鎳鎘電池(NiCd),但這(zhe)種電(dian)(dian)池(chi)具有(you)“記憶效應(ying)”,每次充(chong)電(dian)(dian)前必須放電(dian)(dian),使用起來很不(bu)方(fang)便,不(bu)久(jiu)就被鎳氫電(dian)(dian)池(chi)(NiMH)所取代(dai),NiMH 不(bu)僅沒有(you)“記憶效應(ying)”,而(er)且(qie)每單位重量(liang)可多提升(sheng)10 % 的電(dian)(dian)量(liang)。
在(zai)(zai)日常使(shi)用(yong)的(de)時候(hou),應(ying)該盡量減少(shao)使(shi)用(yong)電(dian)(dian)(dian)池的(de)次數,因為筆記(ji)(ji)本(ben)電(dian)(dian)(dian)池的(de)充放電(dian)(dian)(dian)次數有(you)(you)限,每充一(yi)次電(dian)(dian)(dian),電(dian)(dian)(dian)池壽命就(jiu)減少(shao)了(le)一(yi)次,所以如果在(zai)(zai)使(shi)用(yong)外(wai)接電(dian)(dian)(dian)源時,應(ying)該將電(dian)(dian)(dian)池取下來,如果經常在(zai)(zai)一(yi)天中多次插(cha)拔電(dian)(dian)(dian)源,且(qie)筆記(ji)(ji)本(ben)裝有(you)(you)電(dian)(dian)(dian)池,對電(dian)(dian)(dian)池的(de)損壞(huai)更大,因為每次外(wai)接電(dian)(dian)(dian)源接入就(jiu)相當于給電(dian)(dian)(dian)池充電(dian)(dian)(dian)一(yi)次。此外(wai),筆記(ji)(ji)本(ben)電(dian)(dian)(dian)池有(you)(you)記(ji)(ji)憶效(xiao)應(ying),部分充電(dian)(dian)(不(bu)到100%)會導致電(dian)(dian)池(chi)電(dian)(dian)芯的化學性能(neng)不(bu)一(yi)致,使得電(dian)(dian)池(chi)性能(neng)會退降,因而一(yi)定要將電(dian)(dian)量(liang)用盡后再充(電(dian)(dian)量(liang)低于(yu)1%),這是避免記憶效應(ying)的最好方法,否則電(dian)(dian)池(chi)很容易(yi)暫時失去(qu)供電(dian)(dian)能(neng)力