Charging Amperage always 1A less than setting

[appleguru]

I can confirm that the official response from Tesla is INCORRECT. The in-car readout is also -1A from what the car is set to.

My HPWC is on a 100A circuit and is set to provide a maximum of 80A. My car has a 72A onboard charger. So there should be no problem charging at 40/40A, and yet both the car and app show 39/40A.

This has not been my experience. I only have a 48A charger in the car. My in car readout will be correct/full (EG 30/30), but my app and the api will be 1A less (29/30).

 

[dk1888]

I can confirm that I’m charging at 30/30 etc... again after 2018.44. If you have this issue you can contact your local SC and have them push 2018.44 to fix this issue.

 

[SSonnentag]

My guess is as long as it's chugging along and even at 1A less, it's far from top of Tesla's priority list to fix. If they had time and expertise to throw at it, they would have figured out the problem with new cars and Gen1 HWPC's, since there are a bunch of Gen1 HWPC's deployed out there as destination chargers, and a lot of new Teslas can't use them reliably.

My son has a 2015 S P85D with a Gen1 mobile adapter. We tried many times to get my 2017 S 100D to charge with it, but it always gives errors and refuses to charge. His charges on my Gen 2 adapter and his Gen 1 just fine though. Weird.

 

[whitex]

My son has a 2015 S P85D with a Gen1 mobile adapter. We tried many times to get my 2017 S 100D to charge with it, but it always gives errors and refuses to charge. His charges on my Gen 2 adapter and his Gen 1 just fine though. Weird.

Tell tour SC test your car is broken, ask them to fix it. They might just offer you a new HPWC instead - that is what many people who ran into this problem got.

 

[hpjtv]

Can’t believe this still hasn’t been fixed. Didn’t happen to me before but since the last 2 updates, I’m getting the same issue only with the app. Inside vehicle is registering correctly, app always 1A lower.

 

[airborne spoon]

yeah this is a new error for me about a couple months ago, never had a problem on the old software the OP made this thread about. I mean its not having any effect on charging and the car says the correct amps so its not really an issue just a bit of a r/mildlyinfuriating type of thing