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

從鼠(shu)(shu)標(biao)(biao)的(de)電(dian)壓(ya)中還可以看出鼠(shu)(shu)標(biao)(biao)采(cai)用(yong)的(de)是(shi)(shi)幾節(jie)電(dian)池，如果鼠(shu)(shu)標(biao)(biao)的(de)工(gong)作(zuo)電(dian)壓(ya)是(shi)(shi)1.5V，納悶鼠(shu)(shu)標(biao)(biao)這(zhe)是(shi)(shi)采(cai)用(yong)一節(jie)電(dian)池，當然也(ye)有可能是(shi)(shi)兩節(jie)電(dian)池并聯供電(dian)。如果工(gong)作(zuo)電(dian)壓(ya)為3V那么這(zhe)款鼠(shu)(shu)標(biao)(biao)便是(shi)(shi)采(cai)用(yong)兩節(jie)電(dian)池串(chuan)聯供電(dian)。

知道了鼠(shu)(shu)(shu)標(biao)的功(gong)耗，那么鼠(shu)(shu)(shu)標(biao)續(xu)航時(shi)間(jian)即為(wei)：電(dian)(dian)池(chi)(chi)(chi)(chi)容(rong)量(liang)/鼠(shu)(shu)(shu)標(biao)功(gong)耗。電(dian)(dian)池(chi)(chi)(chi)(chi)的標(biao)準單位均是mah（毫(hao)安每(mei)小時(shi)），電(dian)(dian)池(chi)(chi)(chi)(chi)的功(gong)=電(dian)(dian)池(chi)(chi)(chi)(chi)電(dian)(dian)量(liang)*電(dian)(dian)壓(ya)，假設電(dian)(dian)池(chi)(chi)(chi)(chi)的容(rong)量(liang)為(wei)2200mah，電(dian)(dian)壓(ya)為(wei)1.5V，那么電(dian)(dian)池(chi)(chi)(chi)(chi)的功(gong)便是2200*1.5=3300。

假設鼠(shu)(shu)標的的功(gong)率(lv)為15ma，鼠(shu)(shu)標采(cai)用兩(liang)節電(dian)池串聯供電(dian)，容量為6600mwh（毫瓦每小(xiao)時），鼠(shu)(shu)標在全速工(gong)(gong)作(zuo)狀態(tai)下可(ke)以(yi)使用6600mwh/15ma=440小(xiao)時，意(yi)思為鼠(shu)(shu)標如果不(bu)停地(di)工(gong)(gong)作(zuo)可(ke)以(yi)用440小(xiao)時。

看(kan)的是不(bu)是暈了，總(zong)結起來，鼠(shu)(shu)標(biao)(biao)的全(quan)速續(xu)航時間為：電(dian)池(chi)容量*電(dian)池(chi)電(dian)壓(ya)(ya)*電(dian)池(chi)數量/鼠(shu)(shu)標(biao)(biao)工(gong)作(zuo)電(dian)壓(ya)(ya)/鼠(shu)(shu)標(biao)(biao)工(gong)作(zuo)電(dian)流。

鼠(shu)標(biao)的額(e)定功(gong)率和電(dian)流都(dou)會在(zai)外包裝以及(ji)鼠(shu)標(biao)電(dian)池倉(cang)里標(biao)注著，用(yong)戶(hu)可以輕(qing)(qing)松查看。不過(guo)現在(zai)很多節電(dian)鼠(shu)標(biao)的技術很先進(jin)(jin)，只要(yao)你(ni)稍微不移動鼠(shu)標(biao)就會馬上進(jin)(jin)入輕(qing)(qing)度休眠狀態，為(wei)用(yong)戶(hu)節電(dian)，這個就沒有辦(ban)法計算了。