Quote:
Originally Posted by bandit86
I don't get watts per mile that's why I asked for volts and amp reading
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You are right Wh/mile sounds confusing if you don't practice thinking about it.
That is the way of figuring the fuel economy of an EV.
In the above link for the Land Rover the owner claims 430Wh/mile at 50 MPH.
How did he get that figure?
430(W) X 50(MPH) = 21500 W (or 21.5 KW).
The Land Rover's nominal voltage in the link says 240 Volts.
So 21500(W) / 240(V)= 89.5 Amps!
Therefore it looks like the vehicle is pulling an average of about 90 Amps at 240Volts at 50MPH.
So let's reverse this to see how he got the figure! (rounding numbers).
At 50MPH his Ammeter shows 89.5A and his Volt meter at 240V = 21480 W!
If he held this speed for an HOUR then he used 21480 W/h of energy and covered a distance of 50 miles!
Now divide the number with 50 to see the Wh/miles figure: 21480/50=429.6Wh/mile! (close enough).
There is a thread on real world volts and amps figures at various speeds and cars ( EVs) here:
Highway cruising amps? - DIY Electric Car Forums
Barna