Battery range issue

[Mr Breeze]

So I have a 23 MME premium with an ext range battery. I consistently charge at home to 80% with a range of 230 miles give or take. This weekend I was going on a trip so I charged to 100%. Upon leaving my range showed 340 miles which I knew was a bit high but would most likely correct itself. At about 40 miles into the trip the range dropped to 160 and I received a notification that I would not make my destination without charging. This scared the crap out of me but I was hoping the car which has never been charged to 100 was still learning and would correct. After roughly 100 miles my range kept increasing and I made my destination easily but something is still off. Today I charged to 83% on a level 2 and range was 180 which is way off my normal numbers. When I get home its going straight to dealer but has anyone encountered this issue with their car. Any thoughts

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[Mach-Lee]

There is not necessarily a problem with your car, that's just how range meters and their uncertainty work. If you don't normally drive on the freeway at high speed, the range estimate will be off initially. About 200 miles of range at highway speed 75+ MPH is normal. Also going up hills can affect it significantly.

Since you don't normally drive on the freeway, you need to input your destination into the Ford Nav first. That will adjust your range figure based on the roads you'll take and give you a much more accurate range estimate.

 

[E90alex]

Nothing is wrong. It’s estimating 180 miles because it’s now estimating based on your recent long distance highway driving which is less efficient. As you go back to your normal routine the estimate should start going back to what you’re used to.

 

[AliRafiee]

Was there a lot of elevation change on route to your destination on the nav?

 

[Mr Breeze]

There is not necessarily a problem with your car, that's just how range meters and their uncertainty work. If you don't normally drive on the freeway at high speed, the range estimate will be off initially. About 200 miles of range at highway speed 75+ MPH is normal. Also going up hills can affect it significantly.

Since you don't normally drive on the freeway, you need to input your destination into the Ford Nav first. That will adjust your range figure based on the roads you'll take and give you a much more accurate range estimate.

For a car that normally goes 320 + on a 100% charge jumping on a highway doing 75 isn’t going to lose 40% of range in dead of summer. Something is off

 

[E90alex]

For a car that normally goes 320 + on a 100% charge jumping on a highway doing 75 isn’t going to lose 40% of range in dead of summer. Something is off

It’s not rated for 320 miles of highway driving. It’s rated for 300 miles of mixed driving. Pure highway driving will be less than that. Even less if you go above 70 mph. Even less if it’s really hot outside.

 

[Dave159]

After my normal everyday driving> The GOM was reading 343 at 100%, prior to a road trip. After the road trip reads 312 at 100%, It adjusts based on your driving history,

 

[MadMatt]

i was gonna say, the only way the ER will ever hit anywhere close to 320miles is pure city driving under 50-mph.

your range sounds spot on.

 

[RickMachE]

For a car that normally goes 320 + on a 100% charge jumping on a highway doing 75 isn’t going to lose 40% of range in dead of summer. Something is off

First, it's not rated for 320 in any configuration. With rear wheel drive, it's rated for 306, with AWD, it's rated for 290.

Second, that's an EPA rating, a combination of highway and local driving.

Third, you never mention your SPEED, or your ROUTE, or the WEATHER. In perfect conditions, you might get 3.0 on the highway if you keep it around 70. I have tens of thousands of miles on my Mach-E, driving in the 73 - 75mph range. I get 2.7 to 2.8. 91 x 2.8 = 254.8. 2.7 yields 245.7.

Your range works out to 217. How fast were you driving? Was there a headwind? Rain?

 

[NorthlandPhil]

Had a recent WTH moment with the GOM. I was driving 100+ miles home. GOM was indicating I'd have something like 40 or 50 miles left when I got home. Made a stop on the way. Got back in, started the car, and continued on. A couple miles down the road GOM was indicating I'd make it with just a few (< 10) miles left. WTH?

The range estimate never actually increased, but it decreased at a rate less than what I was driving and made it home with 40+ miles, just as it had originally estimated.

Just my speculation, but I think what happened is, after stopping the GOM calculator started over and because I had to accelerate to get going again, the mi/kWh was considerably less. Thus it calculated a lower range. After a few miles, the mi/kWh averaged out to higher numbers, and the overall range thus increased.

Or maybe the eye of newt, wing of bat ratio got messed up.

 

[RickMachE]

Your speculation is exactly correct.

 

[Mach-Lee]

For a car that normally goes 320 + on a 100% charge jumping on a highway doing 75 isn’t going to lose 40% of range in dead of summer. Something is off

Actually it will if you go fast. I’m not sure you realize that the range you get is highly dependent on the speed you drive. If you drive 80 MPH instead of 60 MPH, you will lose about 40% range because it takes a lot more energy to go fast. Energy consumption per mile is proportional to the velocity squared due to drag.

 

[MadMatt]

what is funny about these threads is the GOM in gas vehicles is way worse yet no one ever really complains about it.

I do understand we've been driving gas motors for years and have a built-in gauge of how far we can go by looking at the gas tank level.

Just get used to watching the % of the battery and train your built in GOM to learn how far 10% can get ya based on the season (and city vs highway).

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