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Preconditioning Battery Faulty

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Cars
Gravity
My car does not charge at full speed for more than 20-30 minutes when using the Lucid 80A home charger. A mobile technician attempted to resolve this by turning on battery preconditioning, but they noticed that the preconditioning cycle never completes. Even with an ambient temperature of 60 to 70 degrees, the battery will remain in preconditioning mode for hours.

The mobile technician suspects that the battery management system needs to be replaced.

Edit:
Been preconditioning now for almost an hour and I think it will completely drain my battery if I don’t turn it off. It’s supposed to finish and turn off on its own!
 
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socktucker said:
I think I have electromagnetic issues
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Since you've had a mobile tech out already I'll assume basic troubleshooting has been completed. What's their plan moving forward? Are they taking your Gravity for in-house service?
 
knewman said:
Since you've had a mobile tech out already I'll assume basic troubleshooting has been completed. What's their plan moving forward? Are they taking your Gravity for in-house service?
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I’m still waiting for Beverly Hills to follow up with the mobile tech’s findings. The mobile tech logged everything and submitted videos documenting the charging issues.
 
hwy17er said:
There shouldn't be any need to precondition for level 2 home charging, only for DCFC
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There isn’t a need for preconditioning for level 2 charging. It was something the mobile tech had advised to do and isn’t working correctly. The at home throttling and preconditioning not operating as intended all point towards the battery management system and/or battery having issues.
 
What charging speeds are you seeing with the 80A charger? Is it on a dedicated circuit?
 
nelslens said:
What charging speeds are you seeing with the 80A charger? Is it on a dedicated circuit?
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I installed a 100A breaker specifically for the charger. The car will start at 80A (19kW) and within 22 minutes will throttle down to 60% (11kW) of that. It’s repeatable without fail.

When I charged the loaner Air, it had no problems staying at the full 80A for the entire charge.
 
Please report back here on what the actual issue(s) was/were
 
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