Stop Measuring EV Charging by Battery Percentage
Rawlinson argues that charging from 10 to 80 percent is a misleading comparison because vehicles have different battery sizes and efficiencies. The customer-relevant metric is miles of range added per minute, which combines charging power with the vehicle's energy efficiency.
- Battery percentage does not equal usable distance
- Charging power alone is also incomplete
- Efficiency determines how much range each kilowatt-hour adds
- Miles added per minute reflects the driver's actual benefit
“It doesn't matter what percentage the battery charges. If your range sucks, your charge rate will suck.”
“it's miles per minute that matters.”