Range drop ?‍♂️

[W1NGE]

Man!

I'm tempted to say RTFM but download the Porsche Good To Know App and review the tutorial videos and the text in the relevant section. It's a doddle to do. Also well covered by myself / others on the forum so search there too. Some screenshots above will help too

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[Icyfraser]

Man!

I'm tempted to say RTFM but download the Porsche Good To Know App and review the tutorial videos and the text in the relevant section. It's a doddle to do. Also well covered by myself / others on the forum so search there too. Some screenshots above will help too

?? some of as are lazy. Ta much!

 

[svp6]

Wet conditions and headwind are taking a big toll on range. You can use a better route planner (ABRP - google it), as far as I remember it takes into consideration weather and seems more accurate than either Tesla or Porsche algorithms. You can also look on windy.com to see your local conditions.

If you see your range dropping rapidly, a decrease in speed can make a huge impact. For your case, driving 10-15 km/h slower would probably have allowed you to get to the fast charger.

As mentioned by others, starting with a warm battery is important for efficiency in cold weather.

Finally, consider overinflating the tires to increase range. I use 42 psi (2.9 bar) and I cannot feel a major impact on ride quality.

 

[lcarron]

Do you use preconditioning timers? I'm also in Glasgow and noticed last few weeks the car uses about 3-5% of battery (if not plugged in) to warm the cabin and battery up each morning and evening, it is a range killer.

3% to 5% mean 3kilowatts. 3Kw for one hour of heat is a lot especially with a heat pump.

 

[W1NGE]

3% to 5% mean 3kilowatts. 3Kw for one hour of heat is a lot especially with a heat pump.

That's why use of the heat seating and heated steering wheel are recommended for 'heat' and to switch AC to Eco when on the move and really only operated this way if range on that journey could be an issue.

Same in an ICE car except that you generally had a bigger tank and took less notice of the consumption. AC needs a lot of energy.

 

[Scandinavian]

Do you use preconditioning timers? I'm also in Glasgow and noticed last few weeks the car uses about 3-5% of battery (if not plugged in) to warm the cabin and battery up each morning and evening, it is a range killer.

3% to 5% mean 3kilowatts. 3Kw for one hour of heat is a lot especially with a heat pump.

I would suspect that there is more heat generated for the battery than just the heat pump. My thinking is that the heat pump will be heating the cabin, but there are additional resources used to heat that 700 kg battery.

I know that on a Tesla M3 the use the motors in some static way to heat the battery, while the heat pump heats the cabin. And the heat pump for the cabin only is about 0.8 kW or so, very frugal. Most like ly Taycan is also using similar technique to heat the battery.

 

[lcarron]

I would suspect that there is more heat generated for the battery than just the heat pump. My thinking is that the heat pump will be heating the cabin, but there are additional resources used to heat that 700 kg battery.

I know that on a Tesla M3 the use the motors in some static way to heat the battery, while the heat pump heats the cabin. And the heat pump for the cabin only is about 0.8 kW or so, very frugal. Most like ly Taycan is also using similar technique to heat the battery.

Is the cabin preheat also combined with battery preheating.

I need a bit of education on the process.

If Im using the car when cold Is the car going to run thé preheat process and lost energy just to heat the battery. I thought you only need to preheat the battery before a high intensity charging session!

If I only need to preheat the cabin can I stop the battery preheat?

Anyway I’m confused.

 

[Scandinavian]

Is the cabin preheat also combined with battery preheating.

I need a bit of education on the process.

If Im using the car when cold Is the car going to run thé preheat process and lost energy just to heat the battery. I thought you only need to preheat the battery before a high intensity charging session!

If I only need to preheat the cabin can I stop the battery preheat?

Anyway I’m confused.

I have not found a way to only pre heat the cabin by timer or app. I have seen the battery being pre heated on nights where we had down to 1.5 degrees C. And the car was preheated as well as the battery. The battery was at a nice 14 or 15 degrees when leaving. It continued to get warmer as we drove on and seemed to get to about 20 degrees. When the navigating to a HPC it would preheat further, up to about 29 degrees.

Yes the car preheats when navigating to a fast charger so that it has an optimum temperature for charging at high rates.

 

[W1NGE]

You need to check that you don't have competing timers / profiles active as this will confuse the situation.

On your regular charging timer tick the preheat / cool option for the chosen departure time such that your car will charge and be warmed at the allotted time.

Pay attention to the preferred charging times and they they don't overlap with your timer for preheat / cool.

Very simple to do but you just need to be aware how these things interoperate.

 

[Ruthi]

WOW this is all new to me I was not aware of heating the battery, I should investigate - thank god I live in California and we don't freeze here. I also charge up to 280 or 285 ish. It went down to 38 degrees one night but the charging was not affected. I do have the performance battery but even the regular gets around 240. Are your batteries different there than here ?

 

[W1NGE]

WOW this is all new to me I was not aware of heating the battery, I should investigate - thank god I live in California and we don't freeze here. I also charge up to 280 or 285 ish. It went down to 38 degrees one night but the charging was not affected. I do have the performance battery but even the regular gets around 240. Are your batteries different there than here ?

Same batteries in all markets. Distinction is simply 'std' or 'performance plus' and in Cross Turismos you don't get the choice as performance plus is std (make of that what you will!).

Key differences in range before any driving takes place (that's a whole new can of worms) is simply the ambient temperature (the colder it is the less range you will have but note that this can change during a journey). In warmer, more humid climbs the range can get up to 340 miles on 100% charge (forum member in Florida) to 275 - 280 miles on 100% charge in UK in summer months (this time of year 3C - 6C - 220 miles tops).

Don't get too caught up on heating the battery - there are specific reasons to do this but for the most part it either happens naturally whilst charging (before use), during a journey, using the NAV to a known charging location, driving like a mad person, or using precool / heat to warm up / cool down the cabin before a journey.

 

[f1eng]

Normal for electric cars I’m afraid.

True, but if the battery is warmed before use the capacity is OK, I think a lot of people don't realise this and so don't do anything about it, despite Porsche including provision to resolve it to a large extent.
Also don't forget the fuel consumption of a normal car is poor for the first 5 to 10 miles in winter as well.

 

[f1eng]

Nope . No timers. Car is garaged overnight so definitely warmer in there than outside though!

The extra "warmness" of being in a garage in winter in the UK isn't enough to make much difference.

 

[f1eng]

Finally, consider overinflating the tires to increase range. I use 42 psi (2.9 bar) and I cannot feel a major impact on ride quality.

Increasing range by over inflating tyres would be illegal in the UK because deviating from the recommended pressures reduces grip so much the braking and roadholding are very much reduced so was banned here many years ago.
As an engineer having spent a lifetime running racing cars I always stick to recommended tyre pressures, having often been the guy testing the car to find where the optimum to recommend is...

 

[Nipri]

I always preheat my car especially for long journeys & does help with the range.
Did in my previous car the I Pace & difference is noticeable.

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