Most charging stations that you'll find today use AC charging. The usual charging speed is 22 kW, depending on the car that you own, as well as the power available to the charging infrastructure. It's ideal for charging your car at home or work because you'll need more time to load. DC charging, on the other hand, is more common near highways or at public charging stations, where you don't have much time to recharge. But DC charging is making its way into home charging, offering new possibilities for customers since it allows not only fast charging but also bidirectional charging.
There are two types of electricity transmitters that can be used for charging electric vehicles. They are called Alternating Current (AC) and Direct Current (DC) power.
The power coming from the electricity grid is always Alternating Current (AC). However, an electric car battery is able to accept only Direct Current (DC). The main difference between AC and DC charging though, is the location where the AC power gets converted. It can be converted outside or inside the car.
The DC chargers are usually bigger since the converter is inside the charging station. This means that it is faster than the AC chargers when it comes to charging the battery.
By contrast, if you use AC charging, the converting process only starts inside of the car. Electric vehicles have a built-in AC-DC converter called an "onboard charger" that converts AC power to DC power. After converting the power, the car’s battery is charged.
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