-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
ricci21
Member
mknox
Well-Known Member
While not directly related, I questioned Sun Country Highway as to why their 80 amp unit would only deliver a 79 amp pilot signal to the car. I would set the car to 80, plug in and the car would drop down to 79 and could not be bumped up beyond that as long as it was plugged in. I get 79/79 amps and sometimes 78/79. SCH's response was that it was a "rounding error" or something like that in the way the car interprets the signal that it is receiving.
Andyw2100
Well-Known Member
It doesn't sound like this could be an issue with the HPWC, as both breser and wk057 have had other cars charging on the same HPWC that don't exhibit these characteristics.
Cottonwood
Roadster#433, Model S#S37
How is this for an error? This is from Charging at a 70 Amp Clipper Creek J1772 in Pagosa Springs. The pilot should indicate 70 Amps available from this EVSE, it's being displayed as 0 offered, and the P85D is charging at 71 Amps!
BTW, the Voltage drooped from 243 Volts to 235 Volts with no current limiting...
mknox
Well-Known Member
Interesting. This is exactly what Sun Country Highway told me when I questioned why my 80 amp EVSE would only send a 79 amp signal to my car.
Danal
electricmotorglider.com
I made one report above... so forgive if this is redundant. I've been keeping an eye out due to this thread, and it is very consistently 80/80, with only the occasional "flick" to 79 (normal). P85D .179
Danal
Danal
My initial observation is that this is resolved in 6.2. But I haven't had it for very long so it's still possible that I'm just getting lucky and getting 80A.
Andyw2100
Well-Known Member
I noticed yesterday that with the new software, the car seemed to be properly recognizing the 80 amp pilot signal from one of my two HPWCs. Today I tried briefly charging at 80 amps at the other one and it worked, with the actual charging amperage varying between 79 and 80 amps. So it definitely looks to me as if this has been corrected in 6.2
llavalle
Member
ggenge
Member
The amperage is a rounding error with the gen2 chargers. Not a huge deal. It's adding up six sub modules worth of current and losing precision along the way to the UI.
The range per hour meter is silly, IMO, but to get the full rated range per hour you need to have virtually no voltage drop on your HPWC wiring. I can pretty much guarantee 99% of homes will end up with less than 240V at the car while charging at 80A, and thus less than maximum range per hour. This is from your home's wiring, utility, etc, not the car or Tesla.
I was wondering if the line voltage was high (250-270) the chargers might throttle back a bit to keep things from exceeding 20kw. I have no ability to test here, because I rarely see 250.
Similar threads
