What is the reason to use pre heat/pre cool ?

[W1NGE]

It's chemistry so therefore a byproduct as you say.

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[W1NGE]

How I use it in UK winter (especially if it's frosty).

Car charges cheap rate ocernight to 80%.
About 30-60 mins before I set off, I use my phone to re-start the charger going again (Direct charge) and also activate precool/heat.

When I get in the car, its nice and warm and frost free. The battery is slightly warmer, so more efficient. And the SOC is about 82-84%. But I will be driving it straight away, so not concerned about it being over 80%.

Safe to charge up to 85% - even 100% if using straightaway. Remember that you aren't doing full cycle charges 0% - 100% and so less impactful to the battery.

 

[Scandinavian]

You need to disassociate the misconception that preheat / cool relates to battery warming (or cooling) - it slight warming is simply due to a by product (chemistry) if using the battery to power something which in this case would be your AC, heated seats, heated steering wheel and rear demister.

Mostly for cabin comfort and can be set remotely via the app and / or use of a Timer. Cold / frosty mornings - use the feature to warm up the interior of the car.

Side effect is (obviously) to increase the temperature of the main battery which helps with range.

I do not think the preheating of the battery, when used with a timer, is just a byproduct from the chemistry in the battery when charging. I remember seeing a poster from a member in Finland, where his battery got very toasty.

I have tried this as well but not had so cold ( only about freezing) and can see that the power drawn from the grid has been between 5 to 7 kW. And that has been going even when the temperature in the cabin is at the set target. The aircondtion fans have been going at extremely low speed.

In an hour I achieved a battery temperature of about 20 C. And then driving the car kept that up and increased to about 30 C in about plus 5 C.

I can not find the reference in the Good to Know app but I believe it was in there somewhere?

 

[W1NGE]

I do not think the preheating of the battery, when used with a timer, is just a byproduct from the chemistry in the battery when charging. I remember seeing a poster from a member in Finland, where his battery got very toasty.

I have tried this as well but not had so cold ( only about freezing) and can see that the power drawn from the grid has been between 5 to 7 kW. And that has been going even when the temperature in the cabin is at the set target. The aircondtion fans have been going at extremely low speed.

In an hour I achieved a battery temperature of about 20 C. And then driving the car kept that up and increased to about 30 C in about plus 5 C.

I can not find the reference in the Good to Know app but I believe it was in there somewhere?

Don't confuse preheating with preconditioning - 2 different things. The latter heats / conditions the battery in readiness for DC charging >= 50kW. The former simply warms the cabin (limited to 60 mins) which will naturally warm the battery given the energy expended to generate the cabin temp.

 

[Jackson]

I am living in Cyprus and the initial battery temperature is 15-25 celsius depending on the season.
Do I need to heat it like to 30 if I want to push the pedal? Or do electro cars work differently from petrol cars and do no harm to the engine (battery) if I rush my car right from the start?

 

[Scandinavian]

I am living in Cyprus and the initial battery temperature is 15-25 celsius depending on the season.
Do I need to heat it like to 30 if I want to push the pedal? Or do electro cars work differently from petrol cars and do no harm to the engine (battery) if I rush my car right from the start?

No absolutely no need to do anything. Just enjoy your drive. You are lucky to live in such lovely temperatures. The cars battery management will take care of all the necessary adjustments.

 

[W1NGE]

Yep, just chill no need to do anything special and no need to let things warm up either.

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