有(you)消息稱(cheng)新(xin)(xin)iPad充電(dian)使用(yong)充電(dian)器充電(dian)顯(xian)示達到100%后，繼(ji)續再充一小時仍然無(wu)法(fa)達到真正的滿電(dian)狀態(tai)，也許(xu)讓新(xin)(xin)iPad充更多的時間可能是(shi)一個好(hao)方法(fa)，但實(shi)際(ji)上這不是(shi)最佳方案。

      因(yin)為在這里忽略了鋰離子電(dian)(dian)(dian)池(chi)(chi)(chi)的壽命(ming)問題。這就存在一個每次(ci)充(chong)電(dian)(dian)(dian)飽滿程度和電(dian)(dian)(dian)池(chi)(chi)(chi)整個壽命(ming)的權衡問題。電(dian)(dian)(dian)池(chi)(chi)(chi)是有壽命(ming)限(xian)制的，最后會失去充(chong)電(dian)(dian)(dian)的能力(li)。長(chang)時間(jian)的充(chong)電(dian)(dian)(dian)會導致(zhi)電(dian)(dian)(dian)池(chi)(chi)(chi)加速退化，最終將(jiang)毀掉電(dian)(dian)(dian)池(chi)(chi)(chi)。經過對電(dian)(dian)(dian)池(chi)(chi)(chi)的研(yan)究發現，充(chong)電(dian)(dian)(dian)時間(jian)的長(chang)短決定(ding)了電(dian)(dian)(dian)池(chi)(chi)(chi)的壽命(ming)。

     有(you)數據顯(xian)示iPad充(chong)電(dian)(dian)時的(de)(de)溫度會達到(dao)86F （30C）左(zuo)右，但是飽和充(chong)電(dian)(dian)和60%充(chong)電(dian)(dian)是有(you)本質的(de)(de)區別的(de)(de)。如果充(chong)電(dian)(dian)保持在40%左(zuo)右時，電(dian)(dian)池每年將(jiang)(jiang)縮(suo)短4%的(de)(de)壽命，而在每次充(chong)滿電(dian)(dian)的(de)(de)情(qing)況下，電(dian)(dian)池每年將(jiang)(jiang)縮(suo)短20%的(de)(de)壽命。

    也許蘋果正式考慮了這個因素，為了保護電池的壽命，設置了電池充電器錯(cuo)誤的充電顯示(shi)信息，但這(zhe)是無可(ke)厚非的。不管怎樣，不要讓iPad充電太久。