Why would you want to?

 

Because it takes around 4kWh to preheat, which would cost nearly a pound instead of 20p, I suspect.

Octopus Intelligent Go nearly always gives me an extra slot at 7am, when my van is preheating. Not sure how it decides, but I’m not complaining!

 

My Ioniq does this, but only if the charge point can deliver more than 10A or 13A I think. It doesn't do it on the granny charger.
Can you not remotely turn the charge point off on an app? Presume if you set the charge times it won't supply any power outside of those times, so set the charge point offpeak times basically rather than using the car's timer.
Alternatively you might be able to remotely dial down the charge power output on your charge point. You can do this on some podpoints, but it means logging into the podpoint WiFi and then selecting it.

Many charge points will have physical jump switches to select the power output so that wouldn't be possible though.

 

I'm not sure you can unfortunately. Our e-niro has the probably related problem in that if it's plugged in to the charger, but the charger isn't advertising any power, the car seems to go through the motions of running the preheat (flashing lights, fans, response on app) but without doing any actual heating. This is obviously a bit pointless. I haven't found a way round it other than unplugging it first.

Over winter I want a warm car frequently but only use the full capacity of the battery rarely, so I agree that preheating on off-peak instead of peak power seems perfectly sensible.

 

@Rbrian is that the van you are talking about? I will take your word that it can take up to 30min to preheat. But the Kia/Hyundai cars have a 15min limit on pre-heating the cabin and also have a limit of about 4kW draw (PTC heater, I'm assuming), whether from battery or grid. That is it.

 

Hi,

To answer my own question and in case anyone else needs this in the future, on the Ohme app you can set a Price Cap, so I added a custom tariff for 5p 00:00-06:00 then 20p for other times, then the app will only allow charging during the 5p period.

So now I can preheat plugged in and it won't take power from the wall only the battery.