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Join Date: Jun 2019
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slow charging with a 7kw charger homologated by Jaguar
since a cooling liquid level warning light popped out (apparently there was no leak, just a sensor malfunction) the charging rate overnight has fallen to 4% (3.87 kw per hour), a bit more than half the potential rate. charging the car from 0-100% can take over 24 hours. Is anyone experimenting the same issue? does anyone knows what could be the reason? the car dealer hasn't found yet what can be the issue.
thanks for your help.
thanks for your help.
Senior Member
Join Date: Dec 2018
Posts: 376
Did you check your breaker at home?
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Join Date: Jun 2018
Location: Castro Valley, CA
Posts: 775
Does this problem happen with other chargers?
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Junior Member
Join Date: Jun 2019
Posts: 2
Quote:
Originally Posted by Stash42
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since a cooling liquid level warning light popped out (apparently there was no leak, just a sensor malfunction) the charging rate overnight has fallen to 4% (3.87 kw per hour), a bit more than half the potential rate. charging the car from 0-100% can take over 24 hours. Is anyone experimenting the same issue? does anyone knows what could be the reason? the car dealer hasn't found yet what can be the issue.
thanks for your help.
thanks for your help.
Thanks for replying. everything is new, it has been installed together with the charger. I don't have the knowledge to see if there an issue there, but it's a good idea, I'll ask the company that made the installation.
Senior Member
Join Date: Apr 2019
Location: Middle OH, USA, Earth
Posts: 188
240V circuit with a double breaker with the charger plugged in all the time, or hardwired? Has it half failed and working like a 120V charger? Switch off the breaker completely, wait at least 10 seconds and switch on the breaker. Do this even if the charger isn't plugged in all the time.
Member
Join Date: May 2019
Location: Montreal, Canada
Posts: 94
The fact that it co-insides with a coolant leak warning, I'd guess the car is limiting the charge rate to protect the battery. If the breaker had tripped, you'd have no current. I don't think twinned breakers (220v) can trip half-way since the switches are ganged together, otherwise, you'd lose a big part of the reason they are there.
Get the sensor fixed and I am pretty sure the charging issue will go away as well.
Get the sensor fixed and I am pretty sure the charging issue will go away as well.
Senior Member
Join Date: Apr 2019
Location: Middle OH, USA, Earth
Posts: 188
Quote:
Originally Posted by rcomeau
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f the breaker had tripped, you'd have no current. I don't think twinned breakers (220v) can trip half-way since the switches are ganged together, otherwise, you'd lose a big part of the reason they are there.
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Join Date: Jun 2018
Location: Palo Alto
Posts: 1,202
Thank you for teaching me a new word. Was this situation really homologated by JLR? I can't imagine that they would say to you "yeah you're using a 7kW cable but the car is designed to use only 3kW."
I am using a generic 7kW charging cable ... invariably (to my frustration) the car starts throttling the rate of charge downward after ~30 min or less. Same has happened to me on a commercial ChargePoint charger at a hotel overnight, and I was dismayed to learn that I would have to spend another two hours in the sihtty hotel room to wait for 100%, which I needed at the time. The solution is always (in my case) to unlock the car, unplug, plug back in. Then it keeps charging at 7kW. It's a bug. Your situation may be more severe, given the ominous sensor issue.
I am using a generic 7kW charging cable ... invariably (to my frustration) the car starts throttling the rate of charge downward after ~30 min or less. Same has happened to me on a commercial ChargePoint charger at a hotel overnight, and I was dismayed to learn that I would have to spend another two hours in the sihtty hotel room to wait for 100%, which I needed at the time. The solution is always (in my case) to unlock the car, unplug, plug back in. Then it keeps charging at 7kW. It's a bug. Your situation may be more severe, given the ominous sensor issue.
Senior Member
Join Date: Apr 2018
Location: Colorado
Posts: 146
I have noticed a reduction in the AC Level charge rate at home also. (only see in ChargePoint app)
It occurs as the SOC gets higher, say 80% give or take.
So I just spoke with a tech at ChargePoint and he said this is normal.
It is the car talking with the charger to slow as it approaches full SOC.
Even if charging at L2, it will slow.
I have not tried the unplug then restart option yet.
The bottom line is to charge to 80% then stop, else it's going to be a while.
It would be nice to see a graph that show charge rate vs. SOC.
It occurs as the SOC gets higher, say 80% give or take.
So I just spoke with a tech at ChargePoint and he said this is normal.
It is the car talking with the charger to slow as it approaches full SOC.
Even if charging at L2, it will slow.
I have not tried the unplug then restart option yet.
The bottom line is to charge to 80% then stop, else it's going to be a while.
It would be nice to see a graph that show charge rate vs. SOC.
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Senior Member
Join Date: May 2019
Posts: 392
Quote:
Originally Posted by Meldev##44
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I have noticed a reduction in the AC Level charge rate at home also. (only see in ChargePoint app)
It occurs as the SOC gets higher, say 80% give or take.
So I just spoke with a tech at ChargePoint and he said this is normal.
It is the car talking with the charger to slow as it approaches full SOC.
Even if charging at L2, it will slow.[IMG class=inlineimg]https://www.i-paceforum.com/forum/images/I-PaceForum/smilies/tango_face_surprise.png[/IMG]
I have not tried the unplug then restart option yet.[IMG class=inlineimg]https://www.i-paceforum.com/forum/images/I-PaceForum/smilies/tango_face_plain.png[/IMG]
The bottom line is to charge to 80% then stop, else it's going to be a while.
It would be nice to see a graph that show charge rate vs. SOC.[IMG class=inlineimg]https://www.i-paceforum.com/forum/images/I-PaceForum/smilies/tango_face_glasses.png[/IMG]
It occurs as the SOC gets higher, say 80% give or take.
So I just spoke with a tech at ChargePoint and he said this is normal.
It is the car talking with the charger to slow as it approaches full SOC.
Even if charging at L2, it will slow.[IMG class=inlineimg]https://www.i-paceforum.com/forum/images/I-PaceForum/smilies/tango_face_surprise.png[/IMG]
I have not tried the unplug then restart option yet.[IMG class=inlineimg]https://www.i-paceforum.com/forum/images/I-PaceForum/smilies/tango_face_plain.png[/IMG]
The bottom line is to charge to 80% then stop, else it's going to be a while.
It would be nice to see a graph that show charge rate vs. SOC.[IMG class=inlineimg]https://www.i-paceforum.com/forum/images/I-PaceForum/smilies/tango_face_glasses.png[/IMG]
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