Range at -2F

[DAJA]

My observation has been that energy performance is mostly due to a head wind or tail wind during highway driving. Colder temperatures tweak it down a bit, but generally I run 1.3 mi / kWh with a headwind and 1.9 mi / kWh with a tailwind (outside temps 20 - 40F).

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[Swcwrx]

It's better to report stuff like this with kwh used. That way you can do miles per kwh. Your battery is a max pack 149 kwh, right? You used 10% of it (14.9 kwh) to go 25 miles. 1.68 miles per kwh. A short trip, -2 in snow mode, thats not bad.

BTW, the 400+ mile range is calculated in the truck based on 2.7 miles per kwh. Optimistic.

Thu 10 Apr 7:05 am just arrived at work. 51.5 miles, *2.80 mi/kWh*, 18 kWh. It just reached 28F. This is typical for me, I'm not trying. Why are our numbers so different?

 

[Swcwrx]

Is the lithium phosphate battery that much more resilient? Maybe that's why i see high 2's and low 3's all the time while others are stuck in the 1's. And my commute is on state roads where 55 is the limit, and i keep it below 60. No interstate highways, and very low stress in the pre-dawn hours. Is anybody else getting similar efficiency? I got 2.80 coming in today, again.

 

[BCondrey]

Thu 10 Apr 7:05 am just arrived at work. 51.5 miles, *2.80 mi/kWh*, 18 kWh. It just reached 28F. This is typical for me, I'm not trying. Why are our numbers so different?

2.8 is really good for not trying! The efficiency is affected by a lot of factors. For example, a stiff headwind can really hurt efficiency, and a tailwind can drive it up. I can get 2.8 easily if I adjust a few factors like speed, cruise control, tire pressure, etc. At some point, after I got used to the range, I gave up caring about it and I just drive like I drive. I monitor it to make sure, and I trust the navigation to calculate the SOC at the destination. BTW, the navigation uses the efficiency the truck sees during the trip, not the EPA estimate, so it is much closer to reality.

 

[usulio]

Is the lithium phosphate battery that much more resilient? Maybe that's why i see high 2's and low 3's all the time while others are stuck in the 1's. And my commute is on state roads where 55 is the limit, and i keep it below 60. No interstate highways, and very low stress in the pre-dawn hours. Is anybody else getting similar efficiency? I got 2.80 coming in today, again.

You already said it before, several times. Most people are driving 75 and you're driving 55.

As you said, most energy is lost to air resistance. Air resistance at 75mph is almost twice as much as at 55. So energy use should be at least 50% higher, i.e. 2.8 mi/kWh at 55mph would equate to 1.9 mi/kWh or worse at 75mph. No mystery.

 

[NY_Rob]

You already said it before, several times. Most people are driving 75 and you're driving 55.

Exactly!

Drive 55mph in moderate outside temps you can actually get near or even make the vehicle's rated range. Drive 75mph, not a chance!

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