That is why AC power comes in through the power lines to your home, and is what is available at power outlets. ![]() Plug-in vehicles are portable so they use DC batteries too (although most of them have AC motors – a complicating step we may consider another day).ĪC electricity is a little more complicated because it switches back and forth, but a key advantage is that it can be transmitted economically over long distances. That is why portable electronics – flashlights, cell phones, laptops – use DC power they have to store it. A key advantage is that it is easy to store in batteries. The reason we have two types of charging is that there are two “types” of electricity, AC and DC so we shall start by discussing them.ĭC is the simple positive-and-negative type of electricity that you probably experimented with in 7th grade science. Technical details are intentionally glossed over here. ![]() But for the curious, this is a simplified explanation of the difference between AC and DC charging. DC is faster, and that is all that they need to know.
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