Question about % and kWh for charging

[JohnnyForensic]

That is different science than I learned. I don’t think it is harder to charge from 80-90 vs 70-80 for chemical reason. The charging efficiency should be almost flat until very last step like above 95 and Mach-E already have a lot of buffer. So my guess is that I won’t lose much by charging to 100. The efficiency is just low because I think Mach-E uses a huge current which produces more heat.

Almost all lithium ion batteries charge slower at the 80% point to full. Cell phones, smartwatches, and cars alike. If you plug into a DCFC, watch your charging rate plummet when you hit 80%. It drops to like 12-14 Kw previously being at 60-80 before that and 132-150 before that. You may not lose more in efficiency, but you will definitely lose more in time (which should be a lot more valuable than the efficiency loss over the time of a charge).

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[minjaep]

Almost all lithium ion batteries charge slower at the 80% point to full. Cell phones, smartwatches, and cars alike. If you plug into a DCFC, watch your charging rate plummet when you hit 80%. It drops to like 12-14 Kw previously being at 60-80 before that and 132-150 before that. You may not lose more in efficiency, but you will definitely lose more in time (which should be a lot more valuable than the efficiency loss over the time of a charge).

Well, it depends. For example, if you don't have a charger at home, charging up to 80% will make you charge more frequently which will waste your time more in the long run. If you dine in or shop while charging, charging time might be not considered wasted.

I know the charging speed is affected, but we are talking about the energy loss. If it is due to the charging station, I have nothing to do. If it is due to my charging habit, I should fix it by sacrificing my convenience. If it is due to the battery heater, motor companies can improve it and it should be one factor to be informed about when selling a car. So I just wanted to know what is the main factor.

 

[will]

Sorry a bit off topic, but to use the free Kwh from Ford, I can use the plug and play aspect of Ford Pass, correct?

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