一直以來(lai)，果粉們都(dou)覺(jue)得iPhone充(chong)(chong)電太麻煩，因為(wei)與其他手(shou)機的(de)充(chong)(chong)電接口根本不通(tong)用。現在，市面(mian)上有(you)很多(duo)帶iPhone充(chong)(chong)電轉接口的(de)產(chan)品，據說連上其他手(shou)機的(de)充(chong)(chong)電器(qi)，也能給iPhone充(chong)(chong)電。那么，iPhone真能用轉接口混用其他充(chong)(chong)電器(qi)嗎(ma)？充(chong)(chong)電又(you)是否安(an)全呢(ni)？

　　《快報時間》買來了兩種轉接口，一種是蘋果公司官網推薦的專用充電轉接口，另一種是網購的通用充電連接線。我們把這兩種連接設備，分別接到4款不同品牌的手機充電器、3款非品牌充電器和iPhone專用充電器上(shang)，看它(ta)們能否正常(chang)給iPhone充電(dian)。

　　實驗一：測試蘋果公司官網推薦的專用充電轉接口，發現有兩款非品牌充電器無法正常給iPhone充電(dian)(dian)。檢測充電(dian)(dian)器連接手機前輸出的空載電(dian)(dian)壓(ya)，這兩款(kuan)充電(dian)(dian)器的空載電(dian)(dian)壓(ya)分(fen)別是5.38伏、5.6伏，比其他六款(kuan)都要高(gao)。

　　“iPhone在充電(dian)時(shi)有限壓保護措(cuo)施，當(dang)手(shou)機連接充電(dian)器時(shi)，會先(xian)檢測空(kong)載(zai)電(dian)壓，超過限壓大小時(shi)，就無法(fa)正常充電(dian)了。”中國計量學院機電(dian)工程學院蔡慧老(lao)師經測試得出結果當(dang)空(kong)載(zai)電(dian)壓高于(yu)5.47伏時(shi)，iPhone就會停止充電(dian)。

　　可(ke)是(shi)(shi)，其中一(yi)款非(fei)品(pin)(pin)牌充(chong)(chong)電(dian)(dian)(dian)器的空載(zai)電(dian)(dian)(dian)壓(ya)(ya)(ya)只有(you)(you)5.38伏，為什么也不能正(zheng)常充(chong)(chong)電(dian)(dian)(dian)呢？蔡慧老(lao)師說(shuo)，萬用表測出來(lai)的是(shi)(shi)電(dian)(dian)(dian)壓(ya)(ya)(ya)平均(jun)值，與實際輸出電(dian)(dian)(dian)壓(ya)(ya)(ya)不同，因(yin)為輸出電(dian)(dian)(dian)壓(ya)(ya)(ya)里有(you)(you)紋波。紋波，簡單地說(shuo)就(jiu)是(shi)(shi)電(dian)(dian)(dian)流里有(you)(you)雜質，導致電(dian)(dian)(dian)壓(ya)(ya)(ya)忽高忽低。“雖然這款非(fei)品(pin)(pin)牌充(chong)(chong)電(dian)(dian)(dian)器的平均(jun)電(dian)(dian)(dian)壓(ya)(ya)(ya)是(shi)(shi)5.38伏，可(ke)電(dian)(dian)(dian)壓(ya)(ya)(ya)最高值有(you)(you)5.63伏，波動很大(da)，所以(yi)也會被iPhone限制無法(fa)充(chong)(chong)電(dian)(dian)(dian)。”

　　由此(ci)可見，并非所有(you)的充(chong)電(dian)器接(jie)上轉(zhuan)接(jie)口，都能給iPhone充(chong)電(dian)。當(dang)充(chong)電(dian)器的空(kong)載(zai)電(dian)壓(ya)(ya)超過5.47伏，或(huo)充(chong)電(dian)器輸出電(dian)壓(ya)(ya)有(you)雜(za)質、電(dian)壓(ya)(ya)不穩定時，iPhone就(jiu)會啟動限(xian)壓(ya)(ya)保(bao)護(hu)措施。

　　實驗二(er)：測試網購的(de)通用充(chong)電(dian)連接線，發(fa)現所有的(de)充(chong)電(dian)器，都能正常給(gei)iPhone充(chong)電(dian)。

　　蔡慧老(lao)師說(shuo)，連接(jie)線(xian)中有分壓(ya)電(dian)(dian)(dian)路，還有一定(ding)(ding)的(de)濾(lv)波功能，能夠過濾(lv)部分雜質，穩定(ding)(ding)電(dian)(dian)(dian)壓(ya)，但是(shi)因為(wei)無法(fa)確(que)定(ding)(ding)到底過濾(lv)了多(duo)少(shao)雜質，電(dian)(dian)(dian)壓(ya)同(tong)樣會(hui)不穩定(ding)(ding)，所(suo)以還是(shi)不建議(yi)使用這種通用的(de)充電(dian)(dian)(dian)連接(jie)線(xian)。

　　除了輸(shu)出(chu)電(dian)壓過大(da)的(de)(de)(de)兩款(kuan)充(chong)(chong)電(dian)器(qi)，其他能給iPhone充(chong)(chong)電(dian)的(de)(de)(de)充(chong)(chong)電(dian)器(qi)使用時都安(an)全了嗎？我們對(dui)充(chong)(chong)電(dian)器(qi)連接iPhone后的(de)(de)(de)輸(shu)出(chu)電(dian)流進行了測試，發現幾款(kuan)充(chong)(chong)電(dian)器(qi)的(de)(de)(de)輸(shu)出(chu)電(dian)流都在iPhone的(de)(de)(de)安(an)全范圍(wei)內，但某品牌(pai)充(chong)(chong)電(dian)器(qi)、非品牌(pai)充(chong)(chong)電(dian)器(qi)兩款(kuan)額定(ding)電(dian)流只有iPhone專用充(chong)(chong)電(dian)器(qi)的(de)(de)(de)一半。

　　“iPhone額定電流是1000毫安，可這些充電器的額定電流只有500毫安，充電器長期處在滿載狀態，會縮短使(shi)用壽命，這樣(yang)的充電器我們不推薦(jian)使(shi)用。”