I own a 2022 Model Y. I live in a condominium with a PowerCharge Level 2 (32A) charging station at my parking spot. This station is made by Lite-On. The Tesla supplied adapter is used to mate the J1772 universal charging station plug to the Tesla charging port. The station is supposed to shut off when the car finishes its charging session. This works just fine for charging limits below 100%. However, at a 100% charging limit the station does not stop trying to deliver electricity to the car. This poses a safety problem and requires the owner to manually attend the end of the session and turn off the station.
I have never charged to 100% but I was curious about battery degradation over my first year of ownership and Tesla told me to charge to 100% and read the range. (I did so and discovered I had lost about 3.9% in the first year which is within expectation.) But -- low and behold -- when I went to the car to check things out after I had received the message that charging was complete (at 100%), the charging station was still on and trying to deliver electricity. I presume the car did not take the excess electricity. Big surprise to discover this. I then ran about 3% off the car and tried it again with the same result. I then used a different charging station in our condo garage (same vendor; same setup) with the same result, again.
A friend in the garage has a 2023 Y with the same charging system set-up. I asked him to run this test and he discovered the same thing -- no shut off at 100% charging limit. He has not had any difficulty with automatic station shut-off at any other charging limit.
Another friend in the garage with the same charging system set-up has a Kia Ionic 5. He ran the test at 100% and the charging station shut off properly when the car was finished at 100%.
I contacted the Tesla Supercharger unit to see if they had any idea what was going on. The representative told me that perhaps the 100% setting is interpreted by the Tesla as a command to continue charging beyond the charging limit. This is very hard to believe.
Has anybody else experienced this problem with any non-Tesla charging station? Any ideas what's really going on?
I have never charged to 100% but I was curious about battery degradation over my first year of ownership and Tesla told me to charge to 100% and read the range. (I did so and discovered I had lost about 3.9% in the first year which is within expectation.) But -- low and behold -- when I went to the car to check things out after I had received the message that charging was complete (at 100%), the charging station was still on and trying to deliver electricity. I presume the car did not take the excess electricity. Big surprise to discover this. I then ran about 3% off the car and tried it again with the same result. I then used a different charging station in our condo garage (same vendor; same setup) with the same result, again.
A friend in the garage has a 2023 Y with the same charging system set-up. I asked him to run this test and he discovered the same thing -- no shut off at 100% charging limit. He has not had any difficulty with automatic station shut-off at any other charging limit.
Another friend in the garage with the same charging system set-up has a Kia Ionic 5. He ran the test at 100% and the charging station shut off properly when the car was finished at 100%.
I contacted the Tesla Supercharger unit to see if they had any idea what was going on. The representative told me that perhaps the 100% setting is interpreted by the Tesla as a command to continue charging beyond the charging limit. This is very hard to believe.
Has anybody else experienced this problem with any non-Tesla charging station? Any ideas what's really going on?