Quote:
Originally Posted by RobertSmalls
The big difference is the Kill-A-Watt will capture inefficiency in the charger and the batteries.
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Exactly. That could be bad for someone focused on one area only. An electric car is a whole system. Batteries and motors are important but they are only some of its parts. Charging is not free nor perfectly efficient. All wires carrying high amps incur line losses both during charge and draw. Wall measurements take that all into account to determine what is practical in a real operating cost per mile basis. I would not be surprised if some of the variation reported between EV folks is just different measurements.
Cheers
KB