-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
Not charging in cold?
- Thread starter duggadugga
- Start date
buddhafree
2022 MYP
It's fine. All available power is used to heat up the battery to prep for charging. Since you are using 120v 15A it may take a while.
If it ever gets enough power to both heat the battery and charge. At -15C (which an online calculator tells me is 5 degrees Farenheit), its entirely possible that there may not be enough power to heat the battery for charging, and charge.
The Tesla Model Y will warm the battery by drawing power from the high voltage battery, sending a special power wave through the motor stators to generate heat. The warm motor coolant is sent to the battery coolant loop. Once the battery temperature is at or above ~41F then charging can commence. Each motor stator draws ~3.5kW while warming the battery. You can see how a 120V/12A charging setup (1.4kW) is not going to be able to supply the roughly 7kW that is used to warm the battery pack. The 120V/12A setup can charge the battery but charging time may extended by ~50% or more due to having to warm the battery (perhaps multiple time over the charging session.
I hit the same today. Tried free supercharging at 65 degrees and the car went from 50-52% over 25 minutes. I gave up.
Did you enter the Supercharger as the destination in the Tesla Navigation system? That would initiate Preconditioning for Supercharging while the Tesla Model Y is being driven to the Supercharger. This happens only while the Tesla vehicle is being driven, using Tesla's Navigation system, to the Supercharger location. (Does not Precondition for Supercharging while parked.)
