Charge in cold weather

[maryn]

I live outside of Charlotte, NC but travelled to northern Indiana this weekend. The trip is a whole other story. But I have noticed when I charge here where it is cold that 80% is much less in miles than it is at home. Is that normal?

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[robrain]

Yes

 

[maryn]

Yes

So this is different than my sisters Tesla that still charges to the same amount, but depletes the charge much faster in the cold. Thanks for confirming!

 

[robrain]

So this is different than my sisters Tesla that still charges to the same amount, but depletes the charge much faster in the cold. Thanks for confirming!

My previous reply was too brief - the reality for the Macan is the same as it was in the Tesla: a given charge will result in less driven miles in cold weather.

The theoretical “miles” figure as displayed just after charging is always a guess, for both the Tesla and the Porsche. Tesla lies more brazenly in this case! As a previous Tesla owner, I always ignore the mile prediction and keep an eye on usage as the journey progresses, especially if the route is hilly, cold or in to a headwind.

 

[maryn]

Very helpful and good to know!!

 

[W1NGE]

All EVs suffer range loss in colder westher - battery chemistry and no real mystery.

Mind that you will also use more energy heating the car so overall range loss will be noticeable.

 

[dbsb3233]

In addition to range shrinking in the cold (becoming more noticeable below ~40F, seriously shrinking the colder it gets below that), charging slows down too. You'll have a hard time getting full charging power when it's cold.

Batteries simply don't like the cold. Slows power transfer down, both in and out. Also, cabin heating uses more power than A/C. When running the heater full-time, you're using some of the battery (upwards of 5-10%), which of course leaves less for the motors.

 

[Wilco]

The range in estimate in your car isn't called the "guess ometer" for nothing.
Using the heated seats is more efficient than the car heating & of course less downward movement with the right foot can save quite a bit.
But who would want to do the latter.

 

[dbsb3233]

The range in estimate in your car isn't called the "guess ometer" for nothing.
Using the heated seats is more efficient than the car heating & of course less downward movement with the right foot can save quite a bit.
But who would want to do the latter.

Yes, GOMs are notoriously fuzzy. But at the same time, the effect of cold on range is very real. So even though the GOM may overestimate the loss (or even underestimate it), the general direction is usually accurate.

 

[RGBArgee]

I live outside of Charlotte, NC but travelled to northern Indiana this weekend. The trip is a whole other story. But I have noticed when I charge here where it is cold that 80% is much less in miles than it is at home. Is that normal?

I dropped from uk miles 320 to 249

 

[Petzi]

outside temp = 3,5c : „battery cold, less energy available„ and 10-80% = 227 km (turbo)

 

[Fluff]

The other point, if its cold, and you hit the heated seats/wheel/heater/windscreen, is that the GOM assumes you will use these until the battery is empty, so if you are at 75% that could be 3 hours of driving. if after a few minutes you start turning these off, your range will recover.

 

[W1NGE]

The other point, if its cold, and you hit the heated seats/wheel/heater/windscreen, is that the GOM assumes you will use these until the battery is empty, so if you are at 75% that could be 3 hours of driving. if after a few minutes you start turning these off, your range will recover.

These (apart from the cabin heater) are powered by the 12v battery and not the HV battery and won't materially impact range calcs.

For this reason Porsche recommend the use of seat heating and steering wheel heating before increasing cabin temperature using AC / cabin heater.

Impractical i know but given the car's reduced range in winter every little helps.

 

[Petzi]

no matter how the

These (apart from the cabin heater) are powered by the 12v battery and not the HV battery and won't materially impact range calcs.

For this reason Porsche recommend the use of seat heating and steering wheel heating before increasing cabin temperature using AC / cabin heater.

Impractical i know but given the car's reduced range in winter every little helps.

no matter how the seat heater and other 12v powered things are getting their energy. the energy has to come from the cars systems. with other words from the main battery.

 

[Fluff]

no matter how the

no matter how the seat heater and other 12v powered things are getting their energy. the energy has to come from the cars systems. with other words from the main battery.

Correct. To try this out, get in, note range, now switch everything on, range will plummet. Now turn everything off, range comes back. Yes the steering wheel heater is probably 20watts, but it all adds up.

My best advice is to get the car warmed up, but be conscious to turn the temp down, and the fan, especially, not because the fan is using lots of power, but its pushing air through the heater, which is using a lot.

Anyway the range I'm seeing is much better than the I-Pace in winter, which would head down to 180-160 miles when it hits -5c.

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