MarcG
Active Member
I was the only one there and checked all 4 pairs, never exceeding a measly 18kW. It took 35 minutes to go from 218 to 250 rated miles. I called Tesla roadside service to complain. The rep said maybe it's slow because it was 34F. I pointed out that's a normal temperature for Mammoth and that I had charged at Mammoth 36x in prior seasons with normal charge rates. Hopefully they will send someone out to inspect.
Perhaps it wasn’t an issue with the chargers but your battery being very cold? Had you left your car outdoors at close to freezing temperatures for a while before attempting to charge?
Short of a CAN bus reader that shows battery temps, you could tell that the battery couldn’t take much power while charging by noting how much regen is being limited while driving (dashed line on the power meter).