OPD didn't work in cold

[YaR]

Is this a known issue? Today the one pedal drive wouldn't work - it gave the message there wasn't sufficient energy. Battery was at 75% and the outside temp at -1C. Worked fine yesterday in similar conditions, albeit I'd parked in the underground car park at work so the car was starting from about 10C.

 

[siteguru]

Maybe the battery was too cold for the system to allow sufficient regen for OPD in case it damaged the battery. ?‍

 

[Coulomb]

Maybe the battery was too cold for the system to allow sufficient regen for OPD...

Maybe. But I think it would (could and should?) just use the friction brakes, as it has to when coming to a complete stop.

Edit: It seems my thought was wrong; see later posts including this one.

 

[magaone70]

I had the same problem yestarday with 53% of battery,I park the car in the garage the night before going to work, then I do 6 km and stop the car, I go home for lunch and do another 6km, after lunch (30 min) I go back to work, another 6 km and then I return home at 5pm, in all 4 cases the OPD was not activated, it had already happened to me with a percentage of 70%, external temperature 5°C.

 

[JonnyG]

It was OK for me yesterday at around -1°C, it turned on and brought me to a full stop when lifting off.

Left with warm battery at 65% SoC and came back with cold battery when starting up and 35% SoC.

 

[SimonS]

OPD finally started working for me today when I got down to 75%. I think it must be battery temperature related as it worked from about 95% in the summer.

 

[Brettus]

Can concur I’ve noticed OPD being all over the place for when it will/won’t engage of late.
Shame as it’s my preferred driving option but I can manage driving without it for a little while, lowest I’ve had to go was 80% I think though. But I generally charge to 90 as it’s used daily and I discharge to the house for some too so it’s a nice buffer.

 

[magaone70]

Even today it didn't activate, battery at 63%....

 

[jiiikoo]

Did you try pre-warming the battery?

 

[Steve Nug]

I'm having the same issue in the cold too

 

[fnegroni]

Did you guys enable intelligent battery heating?

 

[magaone70]

Did you guys enable intelligent battery heating?

I have acrivated today before start on my garage but It doesn't seem to have any effect and with the car cold and stopped for 8 hours, how can I check if the preheating function is working? Can I start it remotely from the app before leaving? Thank you

 

[siteguru]

Yes you can start battery heating via the app - you can even schedule it. It's under the Scheduled Charging section of the app.

 

[Ayoull]

I have acrivated today before start on my garage but It doesn't seem to have any effect and with the car cold and stopped for 8 hours, how can I check if the preheating function is working? Can I start it remotely from the app before leaving? Thank you

You can start the battery heating by going into the Scheduled Charging screen on ismart

 

[magaone70]

You can start the battery heating by going into the Scheduled Charging screen on ismart

thank you very much, I learned something new....I see that I can also start the heating manually, can I also stop it manually when I want? how long do you say to keep the preheating on? after how long does it deactivate (if it deactivates) and how long consumes in 1 hour? A thousand thanks.

 

[siteguru]

In my recent test the battery heating ran for about 45 minutes*, but yes - you can manually stop it. (The Start Heating button changes to Stop Heating when it is running).

* I suspect it runs until the battery reaches an acceptable temperature. I was plugged in to a wall box when doing the test, so battery state of charge was not an issue.

 

[fnegroni]

In my case, I’ve not seen it run for more than 25 minutes. It stops as soon as you start the car anyway. I guess if the battery is stone cold and in subzero temps it might take longer in some cases?
I find that if I preheat the battery via schedule it will take about that amount of time too.
The intelligent heater will than keep the battery warm as I drive. It will only come on at low temperatures and if the battery needs to be heated. And will run for as little as it needs to.
I find it consumes about 1.5 to 2 kWh if used for preheating.
If I heat the battery in the morning, it will stay warm for a few hours. Frequent short journeys benefit from the first pre heat.
I’ve got an OBD-II dongle that I will use to monitor the temperature of the battery pack in different conditions.

For some people this might appear an unnecessary energy consumption. But bear in mind the closer you get to zero Celsius, the greater the resistance in the battery. Especially LFP.
So this extra consumption is aimed at keeping the battery in good state of health.
When charging via a granny charger for example, the battery does not warm up enough and at about 97% the heater will come on and it will trickle charge.
If you want to charge to 100% at zero Celsius you are better off heating the battery before charging, or better still, as soon as possible after driving while the battery is warm, and if necessary then heating it up again at around 90%.

 

[magaone70]

In my case, I’ve not seen it run for more than 25 minutes. It stops as soon as you start the car anyway. I guess if the battery is stone cold and in subzero temps it might take longer in some cases?
I find that if I preheat the battery via schedule it will take about that amount of time too.
The intelligent heater will than keep the battery warm as I drive. It will only come on at low temperatures and if the battery needs to be heated. And will run for as little as it needs to.
I find it consumes about 1.5 to 2 kWh if used for preheating.
If I heat the battery in the morning, it will stay warm for a few hours. Frequent short journeys benefit from the first pre heat.
I’ve got an OBD-II dongle that I will use to monitor the temperature of the battery pack in different conditions.

For some people this might appear an unnecessary energy consumption. But bear in mind the closer you get to zero Celsius, the greater the resistance in the battery. Especially LFP.
So this extra consumption is aimed at keeping the battery in good state of health.
When charging via a granny charger for example, the battery does not warm up enough and at about 97% the heater will come on and it will trickle charge.
If you want to charge to 100% at zero Celsius you are better off heating the battery before charging, or better still, as soon as possible after driving while the battery is warm, and if necessary then heating it up again at around 90%.

thank you so much my friend, very detailed and precise description, can I ask you which USB dongle you use and where did you buy it? Thank you.

 

[fnegroni]

thank you so much my friend, very detailed and precise description, can I ask you which USB dongle you use and where did you buy it? Thank you.

I’ve got an OBDlink MX+, bought from Amazon.

 

[magaone70]

Please show me a picture of It because in Amazon when i insert in search OBDlink MX+,It shows many product.....thanks