A: A charger costs about 20 yuan. For example, Huawei mobile phone 66-watt authentic charger, sold in Jingdong 20.8 yuan a, but also free mail home, how cheap it is. The charging head of Huawei mobile phone 66 watts belongs to the fast charging head. According to the electric work formula W=Pt. The charge in one minute is W=Pt=66 watts x 60 seconds =3960 joules. Huawei mobile phone is a national brand mobile phone, the quality is very good.
Top 10 charger brands:
NO.2 Huawei Huawei 9.8
NO.3 Xiaomi Xiaomi 9.6
NO.4 Anker9.2
NO.5 UGREEN Green 9.0
NO.6 Baseus8.9
NO.7 Romas ROMOSS8.7
NO.8 Bull BULL8.4
NO.9 Purple Rice ZMI8.2
NO.10 nubia, Nubia