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A little confused about these kW numbers, please help clarify for me.

5425 Views 60 Replies 23 Participants Last post by  GJETSON
I've seen 2 numbers associated with the Bolt.
11 kW, and 55 kW

I saw a public charging station outside of a Denny's restaurant, stopped by to look at the spec. It read "50 kW". This station only charges $0.50 per hour to charge.

So if I hook up my future Bolt EUV to it, will I get 11 kW/hour delivered to the battery, or will I get 50 kW/hour? I know there are losses due to battery SOC and other factors, so the numbers I posted are ideal/theoretical. Let's assume there's no loss to make it easier to understand.

Thanks!
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Fine, Andrew, 50 cents per kWh. Feel better?
This seems insignificant, but it isn't. If someone said they were buying gas at 10 gallons per minute, you'd immediately recognize that doesn't make any sense. But it's literally the difference between Kw (a rate that electricity is transferred) and kWh (the energy capacity of the electricity that is transferred).

ga2500ev
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Too Funny. I am with you, Zapster. The layman will understand if you said 50 cents per kw. Its like like saying $3.59 per gallon.
It is explicitly not that. It's the equivalent of saying $3.59 per gallon per hour. It's nonsensical.

Just because humans are good at interpreting incorrect information via context clues doesn't mean that saying something that's complete nonsense should be acceptable.

ga2500ev
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Yes... that's probably best. DCFC is going to be known as "level 3" just as EVSEs are going to be commonly known as "chargers." Fighting this is a losing battle that just makes EV fans look like geeky snobs.
No one has answered my question of what happens when eventually a Level 3 for AC or DC is actually introduced? People will call it Level 4?

I just don't get the pride some seem to have knowingly calling something by the wrong name. The true damage is the fact that those who are ignorant then pick up wrong terminology which exacerbates the problem

ga2500ev
There are infinite decimal numbers between 2 and 3. I don't think it will be a problem.
Except that it is because now that requires renaming something that's been wrongly named "Level 3" to a new name that people don't know "Level 2.5" and the new value "Level 3" now means something different than the interpretation from before.

This issue has popped up for example with the bulk naming of all Fast Charging stations to "SuperChargers". Some new owners of CCS EVs wrongly assume they can charge at Tesla Supercharger stations because all fast charging are SuperChargers. But here if someone new posted that they charged at the EVGo SuperCharger and someone tried to correct them, a crowd of "Well we know what they meant." folks would call to let it go.

Details matter. Wouldn't it just be simpler to call things by their correct name?

ga2500ev
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What will likely happen is that SAE will formally adopt CCS as its Level 3 standard since it is the most widely deployed open standard and has the support of the utility operators.
It has already been formally adopted by SAE. In the standards documents it's called DCFC Level 2.

Circling back around to the central point: There is no such thing as a Level 3.

ga2500ev
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