How many degrees of electricity do you need to charge an electric car battery?

Recently, a user asked me how many Watts was needed to charge an electric car when its battery was fully discharged. For this question, as an old master, let us analyze it today.

First of all, there are many types of batteries for electric vehicles, including 48V, 60V, etc.. However, due to the implementation of the new national standards, the battery voltage has a clear limit. So today we're going to talk more about 48-volt electric car batteries.

The average charging voltage of the 48V20AH battery is approximately 51.6 V, and the required charge is 1.05 times the charge, so it consumes approximately 1.08 kWh(the consumed charge = average charging voltage * battery rated capacity * 1.05).

It should be noted that all batteries can have the same voltage but different capacities, and once the capacity is low, their power consumption will be relatively low, for example, 48V12AH batteries are generally charged at 0.65 degrees. Therefore, the larger the voltage and capacity, the greater the power required for a single charge.

In addition, one thing that can be explained to you is that the average electric car battery is completely discharged and can charge 8 to 10 hours, which means that its 48V20AH battery consumes 0.1 degrees to 0.13 degrees per hour, and 48v12ah battery consumes electricity per hour. From 0.06 to 0.08. It can also be seen that the cost of charging an electric car is not as high as it is expected.

Of course, this is also a complete discharge. In fact, in general, when the battery power is less than 30 %, it needs to be charged immediately to prevent excessive discharge and battery damage in electric vehicles. In addition, electric vehicles can not be charged at will because lead-acid batteries have a certain amount of charging and discharge, and if they are often charged, they will shorten their service life.

In short, after a full discharge, it takes approximately 0.65 to 1.08 degrees to charge the battery of an electric vehicle(for example, a 48V battery). For users, the daily charging of electric vehicles also requires reasonable control of the charging time.

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