一、用汽車usb給手機充電好嗎
開車出行時,導航、拍照、打電話等都會導致手機耗電快,有時許多車主會直接用車載usb接口給(gei)手(shou)機充電(dian),那么usb接口充電(dian)好嗎?
答案是(shi)否定的(de)(de)。大(da)部分車內的(de)(de)USB接(jie)口(kou)都是(shi)為了音頻數據(ju)傳輸(shu)(shu)而(er)設置的(de)(de),電(dian)(dian)(dian)流(liu)(liu)只(zhi)有5V/0.5A,而(er)大(da)部分手(shou)(shou)機的(de)(de)輸(shu)(shu)入電(dian)(dian)(dian)流(liu)(liu)需求(qiu)為1A,一旦與車內的(de)(de)USB接(jie)口(kou)連接(jie)的(de)(de)話,這些接(jie)口(kou)僅能輸(shu)(shu)出0.5A的(de)(de)電(dian)(dian)(dian)流(liu)(liu),會大(da)大(da)延長(chang)(chang)充(chong)(chong)電(dian)(dian)(dian)時間,導致充(chong)(chong)電(dian)(dian)(dian)慢,長(chang)(chang)此(ci)以往你會發現,手(shou)(shou)機耗電(dian)(dian)(dian)越(yue)來越(yue)快,電(dian)(dian)(dian)池越(yue)來越(yue)不(bu)耐用(yong),甚至電(dian)(dian)(dian)路板都損壞了,因此(ci),不(bu)建議用(yong)汽(qi)車usb接(jie)口(kou)給手(shou)(shou)機充(chong)(chong)電(dian)(dian)(dian),應急(ji)使用(yong)的(de)(de)話還(huan)好,長(chang)(chang)期(qi)使用(yong)是(shi)肯定會縮短手(shou)(shou)機使用(yong)壽(shou)命的(de)(de)。
除了影響手(shou)(shou)機(ji)(ji)外(wai),用汽(qi)(qi)車usb給手(shou)(shou)機(ji)(ji)充電(dian)的(de)缺點還(huan)有一個就是成本(ben)(ben)更高,據統計,手(shou)(shou)機(ji)(ji)在用USB端口充電(dian)的(de)時候,會(hui)使(shi)每加侖汽(qi)(qi)油(約(yue)3.8L)的(de)駛里(li)程降低約(yue)0.48公里(li),加大了油耗,充電(dian)成本(ben)(ben)還(huan)是相當高的(de)。
二、車載usb充電慢怎么解決
用(yong)車載(zai)usb充(chong)電慢(man)是必然的,因為它的輸出電流較(jiao)低,如果在用(yong)車載(zai)usb充(chong)電的同(tong)時還開(kai)導(dao)航,你會(hui)發現(xian)不僅充(chong)不進去電,反而電量會(hui)降(jiang)低,那么車載(zai)usb充(chong)電慢(man)怎么辦呢?
1、接專門的usb充電口
很(hen)多車(che)型為了方便消費者,會專門(men)在車(che)上設置(zhi)一個為手(shou)機充(chong)電的地(di)方,一般(ban)在手(shou)扶(fu)箱下(xia)方,或者是后(hou)面排風出口(kou)的附近,并且上面還(huan)會顯示有電流標(biao)示,這種usb口(kou)的輸出電路更大(da),能用于手(shou)機充(chong)電。
2、安裝車載充電器
用車(che)載充電(dian)(dian)(dian)器(qi),從點煙(yan)器(qi)取電(dian)(dian)(dian),經(jing)過(guo)電(dian)(dian)(dian)子電(dian)(dian)(dian)路把電(dian)(dian)(dian)流(liu)調制成(cheng)適合手(shou)機充電(dian)(dian)(dian)的(de)電(dian)(dian)(dian)壓電(dian)(dian)(dian)流(liu)后給手(shou)機使用。不過(guo)購(gou)買(mai)車(che)載充電(dian)(dian)(dian)器(qi)時要(yao)注(zhu)意,車(che)載充電(dian)(dian)(dian)器(qi)的(de)USB接口一(yi)般會設置兩種不同的(de)額定電(dian)(dian)(dian)流(liu),分(fen)別是2.1A和1A,在(zai)使用的(de)過(guo)程當中,也(ye)要(yao)注(zhu)意的(de)選擇(ze)的(de)接口不能小于手(shou)機的(de)最(zui)大額定輸入功(gong)率(lv),不然(ran)也(ye)會導致充電(dian)(dian)(dian)慢的(de)問題。
3、用充電寶
如果(guo)車(che)上沒(mei)有專門(men)的usb充電(dian)(dian)口,又懶(lan)得安裝車(che)載(zai)充電(dian)(dian)器,就可以直接使用移動電(dian)(dian)源給手機充電(dian)(dian),也十分方(fang)便。