實際功率=工作電壓*工作電流，比如一款無線鼠標的工(gong)作電(dian)壓(ya)為3V（福特），工(gong)作電(dian)流為5ma（毫安），那么這款鼠標(biao)的功率即為3*5=15mw（毫瓦）。

從鼠(shu)(shu)標(biao)的(de)電(dian)(dian)(dian)(dian)(dian)壓中還可以看出鼠(shu)(shu)標(biao)采用(yong)的(de)是(shi)幾節電(dian)(dian)(dian)(dian)(dian)池，如(ru)(ru)果(guo)鼠(shu)(shu)標(biao)的(de)工(gong)作電(dian)(dian)(dian)(dian)(dian)壓是(shi)1.5V，納悶(men)鼠(shu)(shu)標(biao)這是(shi)采用(yong)一節電(dian)(dian)(dian)(dian)(dian)池，當(dang)然也有(you)可能是(shi)兩節電(dian)(dian)(dian)(dian)(dian)池并(bing)聯(lian)供電(dian)(dian)(dian)(dian)(dian)。如(ru)(ru)果(guo)工(gong)作電(dian)(dian)(dian)(dian)(dian)壓為3V那么這款鼠(shu)(shu)標(biao)便(bian)是(shi)采用(yong)兩節電(dian)(dian)(dian)(dian)(dian)池串聯(lian)供電(dian)(dian)(dian)(dian)(dian)。

知(zhi)道(dao)了鼠標的(de)功(gong)(gong)耗(hao)，那(nei)(nei)么(me)鼠標續航時(shi)間(jian)即為(wei)：電(dian)池容量/鼠標功(gong)(gong)耗(hao)。電(dian)池的(de)標準單(dan)位均(jun)是mah（毫安每小(xiao)時(shi)），電(dian)池的(de)功(gong)(gong)=電(dian)池電(dian)量*電(dian)壓，假(jia)設電(dian)池的(de)容量為(wei)2200mah，電(dian)壓為(wei)1.5V，那(nei)(nei)么(me)電(dian)池的(de)功(gong)(gong)便(bian)是2200*1.5=3300。

假設鼠(shu)(shu)標(biao)的(de)的(de)功率為15ma，鼠(shu)(shu)標(biao)采用兩節電(dian)(dian)池串聯供電(dian)(dian)，容(rong)量為6600mwh（毫瓦每小(xiao)時(shi)），鼠(shu)(shu)標(biao)在(zai)全速工(gong)作狀(zhuang)態下可以(yi)使用6600mwh/15ma=440小(xiao)時(shi)，意思(si)為鼠(shu)(shu)標(biao)如果(guo)不停地工(gong)作可以(yi)用440小(xiao)時(shi)。

看(kan)的是(shi)不是(shi)暈了，總結(jie)起來(lai)，鼠標(biao)的全速續航時間(jian)為：電(dian)(dian)池容(rong)量*電(dian)(dian)池電(dian)(dian)壓*電(dian)(dian)池數(shu)量/鼠標(biao)工(gong)作電(dian)(dian)壓/鼠標(biao)工(gong)作電(dian)(dian)流(liu)。

鼠標的額定(ding)功率和電流都會在(zai)外(wai)包裝以(yi)及(ji)鼠標電池倉里標注著，用戶可以(yi)輕(qing)松查看。不過現在(zai)很(hen)多節電鼠標的技術很(hen)先進，只要(yao)你稍(shao)微不移動鼠標就會馬上進入輕(qing)度休眠狀態，為用戶節電，這個(ge)就沒有辦法計算了(le)。