F150 Real MPGe based on charging from wall outlet

[Roy2001]

Looks like Ford official MPGe data is based on electricity stored in battery.

InsideEVs review mentioned that they squeezed 2.4 miles per kWh. They also mentioned that charge station shows 41kWh consumed while truck shows 38kWh added in battery.

So charging efficiency is about 92%, we can expect 1.8-2 miles per kWh from wall, not the truck reading.

For comparison, my Prius Prime is reated at 133 MPGe, it draws 6.3kWh and can drive around 25 miles with EV mode.

Sponsored

 

[beatle]

All EPA estimates are based on energy consumed from the outlet.

 

[vandy1981]

Looks like Ford official MPGe data is based on electricity stored in battery.

MPGe is based on energy consumed from a 240 volt outlet. Level 2 charging is actually less efficient than DCFC and ranges around 10-15% in most EVs.

 

[Roy2001]

All EPA estimates are based on energy consumed from the outlet.

F150 EPA MPGe is not like that.

 

[beatle]

F150 EPA MPGe is not like that.

What makes you say that? Here is how MPGe is calculated:

https://www.fueleconomy.gov/feg/atv-ev.shtml

 

[LightningShow]

F150 EPA MPGe is not like that.

We’ve already discussed this and run the calculations. The MPGe numbers include ~15% charging loss.

 

[Amps]

F150 EPA MPGe is not like that.

EPA's equation includes a component (EM) that is defined as, "

wall-to-wheel electrical energy consumed per mile

 

[Roy2001]

What makes you say that? Here is how MPGe is calculated:

https://www.fueleconomy.gov/feg/atv-ev.shtml

68 MPGe means 2 miles/kWh. 98 kWh battery means 196 miles range. Tell me how to reach 230 miles reange.

 

[Amps]

68 MPGe means 2 miles/kWh. 98 kWh battery means 196 miles range. Tell me how to reach 230 miles reange.

You're still ignoring charging losses with your first sentence. Maybe Tom explains it better:

 

[LightningShow]

68 MPGe means 2 miles/kWh. 98 kWh battery means 196 miles range. Tell me how to reach 230 miles reange.

It's because it requires 39.6kWh of electricity to get 33.7kWh into the battery (33.7/0.85=39.6). Or, 115kWh to get 98kWh into the battery. If you drive 230 miles and used 115kWh, the overall efficiency is 2 miles/kWh. That's different than the driving efficiency, since the vehicle only used 98kWh to go that 230 miles. The other 17kWh was lost as heat while charging.

 

[Roy2001]

It's because it requires 39.6kWh of electricity to get 33.7kWh into the battery (33.7/0.85=39.6). Or, 115kWh to get 98kWh into the battery. If you drive 230 miles and used 115kWh, the overall efficiency is 2 miles/kWh. That's different than the driving efficiency, since the vehicle only used 98kWh to go that 230 miles. The other 17kWh was lost as heat while charging.

Let's forget about efficiency, just talk about the amount from wall outlet and the range.

 

[LightningShow]

Both numbers are efficiency, they're just different types of efficiency. 2 miles/kWh is the energy efficiency, 2.35 miles/kWh is the driving efficiency. You use the driving efficiency to calculate range and the energy efficiency to calculate the electricity cost to operate the vehicle.

EDIT: the energy efficiency is variable depending on the type of charger you are using, Ford uses 15% energy loss as an average.

 

[beatle]

Let's forget about efficiency, just talk about the amount from wall outlet and the range.

Okay, it takes about 112.7kwh from the outlet to fill the SR battery from empty and you can drive about 230 miles until the truck stops.

With your comparison to a Prius, I am not sure what you were getting at with your original post.

 

[Roy2001]

Okay, it takes about 112.7kwh from the outlet to fill the SR battery from empty and you can drive about 230 miles until the truck stops.

With your comparison to a Prius, I am not sure what you were getting at with your original post.

113kHw for 230 miles, 68 MPGe. This is the equation we should talk.

 

[Solar_EE]

113kHw for 230 miles, 68 MPGe. This is the equation we should talk.

Time for the EPA to get rid of the "mpgE" numbers. All I care about are the miles per kWh just like in the cars where the figure of merit was miles per gallon. Does the EPA calculate the energy used to drill for oil, refine it, truck it, pump it, etc? I don't think so. In my case the power comes directly from my solar panels to my car. Yes there's some efficiency lost in charging any battery so that number can be used for calculating costs per mile. Wholesale electricity in PJM interconnect was 4.2 cents per kWh last year- projected to increase to 9 cents per kWh this year. Cost per mile to drive my 2016 F150 is now about 25 cents per mile. Cost per mile to drive my F150 Lightning will be 2.5 cents per mile, maybe double that next year but a huge cost savings over dino-fuel.

Sponsored