AC vs DC Charging: 7 Fundamental Differences

23 Sep.,2024

 

AC vs DC Charging: 7 Fundamental Differences

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. 

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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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Difference between AC and DC charging explained

A guide to the two charging types, and what they mean for electric vehicle users

If you&#;ve made the switch to an electric vehicle (EV)&#;or are considering it&#;you might have heard people talk about &#;AC&#; and &#;DC&#; charging. But is there a difference? And what do you need to know?

Put simply, AC and DC are two different types of electric current. AC stands for &#;alternating current&#;, while DC is short for &#;direct current&#;. While both AC and DC currents can help drivers to power up and get on the road, there are differences between them&#;with DC charging typically providing a faster charge. Below, we answer 7 questions for EV drivers.

How do EV batteries store energy?

While both AC and DC charging stations can be used to charge an EV, an EV&#;s battery will only ever store DC energy.

So, how is it possible to charge an EV using AC?

While EV batteries store DC energy, EV drivers can still use an AC charging point to power up and get on the move. That&#;s because a converter in the car will convert AC electricity into DC&#;allowing it to be stored into the battery.

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