46kWh at 60Mph on flat highway... Normal ?

[Grease Lightning]

for an ev I think energy/mile.

Maybe it is because of the Lightning’s battery capacity, but I much more prefer the mi/kWh. Since I have the ER generally I have 100kW of usable battery, so it is very easy to see I am averaging 2.3 mi/kWh and know I have about 230 miles. Where 435 Watts/mile is less “easy”.

Sponsored

 

[bydabeach]

Just to make sure we are talking apples and apples here, your precondtioning is setting a departure time, plugged into 240v, correct?

Correct. The two things that could make a difference (1) It is warmer in my late afternoon/evening commute than when I drive early in the morning (2) perhaps I have slightly more "downhill" driving on the way home, but the Garden State Parkway is fairly flat.

On my commute, my Lightning consistently "consumes" about 15% of the SOC. Commute is 37 miles and 15% is 19.65 kWh, and that calculates out to 1.88 mi/kwH. Have tried to slow it down below 70 mph, which is difficult to do on the Garden State Parkway, and really unnecessary since the commute is only 37 miles.

 

[WeedmanU]

Part of my calculator tool includes converting between several different ways of showing efficiency, helps to make sure we all speak to the same values:

https://lightningcalcs.pages.dev/efficiencies

So it's normal? To simplify, whatever the conversion whit an extended battery at 60mph I'm able to make 160 miles total . 110 miles at 75Mph

 

[roadhouse]

There are three options under “General” for how you want efficiency reported.
In Canada, for a very long time now, fuel efficiency has typically been expressed in L/100km (litres used per 100km driven). It is opposite of MPG, but is more precise than a single digit with one decimal place rounded.

Same in Australia. It's actually subtly measuring two different things. One is measuring efficiency, the other is measuring range.

 

[invertedspear]

So it's normal? To simplify, whatever the conversion whit an extended battery at 60mph I'm able to make 160 miles total . 110 miles at 75Mph

In no way was I referring to your situation. Just trying to help people see the different ways that efficiency is displayed. I'm not able to respond on if it's normal or not. I don't live in a place that gets nearly that cold. What I can do is run a few factors that have been observed.

1. EVs don't like cold. 4C will cut about 1/3rd of the total capacity out of most batteries, the F150L actually handles cold a bit better and only seems to loose 25%. The car won't show you this in lower battery capacity, but will instead display it as lower efficiency.
   1. 320 x 0.75 = 240 miles
2. The heater in the Lightning is not great from my understanding. The AC is actually less impactful on range. I don't have a figure for that, but I think using a decent amount of heat could explain maybe another 15-20% cut to your range.
3. The EPA range test is shit for comparing highway driving to. It's a "mixed use" test and does half at 55MPH or something like that, and half in stop and go. EVs with regenerative brakes do really well in stop and go.

I would have thought this was low, but the more I consider it, yeah, this might be normal for those temps.

Sponsored