Mobile phone charging does not cost, if it is to rent a charging bank or shared charging pile to use electricity to charge, it is recommended to refer to the cost notice near the way you use, after all, the charging standard is not the same everywhere, some places 0.5 yuan an hour, some places 2 yuan an hour, not the same.
It is recommended that you go to the restaurant to charge when you eat, which can be free.
If someone else's mobile phone is out of power, need your help, use your store's electricity will be charged, to a cigarette or buy a bottle of drink on the line, there is no need to be so haggle, after all, who will encounter difficulties outside, in order to harmonious society, do something good is also very good.
0.036 yuan
The voltage of the mobile phone is generally 3.7~4V, the capacity is calculated according to the general 1500mAh, the charging power is 4*1.5=6VAh~6Wh, and the electricity is 1000Wh. Electricity charge is calculated according to 60 cents, 6\/1000*0.6=0.0036 yuan.
The battery capacity of your mobile charger is 5000mAH, and if the battery is charged according to 100% of the battery capacity, it takes 50 hours to charge with 100mA current; If you charge at 500mA, it takes 10 hours; If the current is charged at 1000mA, it takes 5 hours. The actual power consumed on the battery is 1A*5H * 4.2V\/1000 = 0.02 degrees.