Range degeneration?

[Mach T]

This is my second winter with my 2023 mme GT. Last winter, my range at 80% charge was around 180 miles. Today, ambient weather in the mid 20s, I had a range of 160 at 80% when I left the house. I drove a 12 mile round trip and used 30 miles of range. Can someone suggest what's going on? Did the battery really deteriorate that much in one year?

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[AKgrampy]

Just the vagrancies of wind, temp, driving speeds, driving history, etc. I have actually left my heated garage and had my SOC go up after driving 10 miles in the winter.

 

[Shepherd]

I think it due to the cold weather. It’s unseasonably cold now. I charged it to 95% and the range estimate was 271 miles. Three months ago when the weather was warmer the range estimate was 20 miles greater.

 

[ChasingCoral]

It’s that time of year again. Someone’s been siphoning electrons out of your battery.

 

[rhougey]

This is my second winter with my 2023 mme GT. Last winter, my range at 80% charge was around 180 miles. Today, ambient weather in the mid 20s, I had a range of 160 at 80% when I left the house. I drove a 12 mile round trip and used 30 miles of range. Can someone suggest what's going on? Did the battery really deteriorate that much in one year?

(1) You did not “have” a range of 160 when you left on your little frigid trip. The GOM was only indicating that you might experience a range of 160 miles based on your recent habits and at 25F or whatever the temp in your garage was, but then you messed up its estimate by
(2) taking a very short trip of 12 miles or possibly two extremely shorts trips of 6 miles each, possibly without doing any (plugged in) preconditioning before you set out. Every time you set out in cold temps, the car spends a significant amount of energy warming the battery and maintaining a warm battery. Even if your destination stop was only a 10 minute stay, at 25F the car would have had to re-warm the battery somewhat all over again.
(3) If your trip(s) had been longer, the energy spent on the front end would have been amortized over more miles traveled, and your GOM would not have been so skewed.
(4) You did not lose miles, you only expended unpredicted energy while traveling very few miles in return. If you did the same thing every day, your GOM would not even show 160 estimated miles of range each morning.

 

[RockinVs]

Basically... it's cold. It never got this cold last winter here in MN with my MME. I'm finding out the same things. It is 7°F outside right now. My car in in the garage but it isn't heated. My GOM is all over the place. Sometimes I lose 10% in the first few miles.

 

[Mach-Lee]

You should try to follow these tips in cold weather:

• Plug the car into a Level 2 charger every night (so the battery stays warm).
• Schedule departure times for regular trips, and before long drives.
• Otherwise, use remote start/HVAC ON for ~10 minutes before driving to warm the cabin up.
• Plug in as much as possible.

The displayed range will go down and change daily. That's normal, expected, and there's nothing wrong with your car.

Try to avoid leaving the car outside unplugged; that's the worst thing you can do for range.

More info:
https://www.macheforum.com/site/thr...nd-tricks-to-get-the-most-from-your-ev.32537/
https://www.macheforum.com/site/threads/mach-lees-cold-weather-charging-strategies.24548/

 

[UTME06]

It hasn't got super cold where I live yet, but I have noticed a faster rate of discharge over the past week or two. My full-charge milage estimate hasn't updated much yet, but I assume it will. Up till now (bought the car in September) I would get ~3.5kWh/mi but now it's regularly ~2.5... which makes sense, I'm not shy with the seat heaters and preheating.

The GOM has a bit of recent driving bias, so if you take a long highway trip, for example, it takes a couple weeks of commuting to bring the estimates back up to where they started. I assume the seasons will be the same way.

 

[AllenXS]

It’s that time of year again. Someone’s been siphoning electrons out of your battery.

Who’s doing this?
They should be charged!

 

[67 Stang Convertible]

This is my second winter with my 2023 mme GT. Last winter, my range at 80% charge was around 180 miles. Today, ambient weather in the mid 20s, I had a range of 160 at 80% when I left the house. I drove a 12 mile round trip and used 30 miles of range. Can someone suggest what's going on? Did the battery really deteriorate that much in one year?

Your car is fine. More variables then just temp play into the Guess-O-Meter. Just drive the car and enjoy it. Don't get caught up in the #'s. Did you calculate your range loss in the winter when you drove a Petrol car???

 

[ChasingCoral]

Just read this
https://www.macheforum.com/site/thr...ulate-how-far-your-mach-e-can-really-go.6104/

 

[d^2x/dt^2]

You should try to follow these tips in cold weather:

• Plug the car into a Level 2 charger every night (so the battery stays warm).
• Schedule departure times for regular trips, and before long drives.
• Otherwise, use remote start/HVAC ON for ~10 minutes before driving to warm the cabin up.
• Plug in as much as possible.

The displayed range will go down and change daily. That's normal, expected, and there's nothing wrong with your car.

Try to avoid leaving the car outside unplugged; that's the worst thing you can do for range.

More info:
https://www.macheforum.com/site/thr...nd-tricks-to-get-the-most-from-your-ev.32537/
https://www.macheforum.com/site/threads/mach-lees-cold-weather-charging-strategies.24548/

I have a slightly different angle on this issue and would appreciate your thoughts.

I'm less interested in maximizing range as much as I am minimizing electrical use at the meter.

I have a 30 mile each way commute and cannot plug in at work. Range is never really an issue regardless of what charging strategy I use. I suspect some of the range extending strategies increase overall electrical use but would appreciate a more informed opinion. Thank you.

 

[Teslaeata]

(1) You did not “have” a range of 160 when you left on your little frigid trip. The GOM was only indicating that you might experience a range of 160 miles based on your recent habits and at 25F or whatever the temp in your garage was, but then you messed up its estimate by
(2) taking a very short trip of 12 miles or possibly two extremely shorts trips of 6 miles each, possibly without doing any (plugged in) preconditioning before you set out. Every time you set out in cold temps, the car spends a significant amount of energy warming the battery and maintaining a warm battery. Even if your destination stop was only a 10 minute stay, at 25F the car would have had to re-warm the battery somewhat all over again.
(3) If your trip(s) had been longer, the energy spent on the front end would have been amortized over more miles traveled, and your GOM would not have been so skewed.
(4) You did not lose miles, you only expended unpredicted energy while traveling very few miles in return. If you did the same thing every day, your GOM would not even show 160 estimated miles of range each morning.

Bang on!

I often leave the garage after full charge and pre-condition with 306 miles on the clock and think “yeah, in my dreams!”

It’s not far into the day before miles covered plus miles left on clock reverts to a more realistic c260 miles this time of year.

That’s with 102,000 miles & 94% SOC.

 

[Mach T]

Your car is fine. More variables then just temp play into the Guess-O-Meter. Just drive the car and enjoy it. Don't get caught up in the #'s. Did you calculate your range loss in the winter when you drove a Petrol car???

Yes, I did. In the 2012 Mustang GT convertible that I owned, I would go from 20 miles a gallon in summer to 19 miles a gallon in winter. So not much of a variance

 

[Mach T]

(1) You did not “have” a range of 160 when you left on your little frigid trip. The GOM was only indicating that you might experience a range of 160 miles based on your recent habits and at 25F or whatever the temp in your garage was, but then you messed up its estimate by
(2) taking a very short trip of 12 miles or possibly two extremely shorts trips of 6 miles each, possibly without doing any (plugged in) preconditioning before you set out. Every time you set out in cold temps, the car spends a significant amount of energy warming the battery and maintaining a warm battery. Even if your destination stop was only a 10 minute stay, at 25F the car would have had to re-warm the battery somewhat all over again.
(3) If your trip(s) had been longer, the energy spent on the front end would have been amortized over more miles traveled, and your GOM would not have been so skewed.
(4) You did not lose miles, you only expended unpredicted energy while traveling very few miles in return. If you did the same thing every day, your GOM would not even show 160 estimated miles of range each morning.

Interesting. Thx!

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