OK, so here's where we stand. In a few email exchanges with this acquaintance, he, on his own and not part of any official ChargePoint
response, preferred to take the empirical approach and first measure what the pilot is telling the car and how the car is responding. Evidently, there have been significant issues with other manufacturers (i.e., cars not complying with the J1772
spec) that this is the logical first step.
To that end, what I intend to do is, when running low on charge, seek out a dual ChargePoint
station and plug in and monitor the charge (using the ChargePoint
app) to see when I get a 'timeout' and what the response is after the 'timeout' goes away. If I can make the problem occur then I will contact my friend and we can get together so he can attach his instrument and we can measure the pilot and car's power draw. He's really interested in seeing what the EVSE
pilot signal is commanding in our situation. Even though we're convinced it's the EVSE
, this test will conclusively prove or disprove this supposition. Come to think of it, I'll ask him if they have a dual-port EVSE
HQ as I can drive down there to do this test.
The hint by ChrisEV that the timeout occurs at 36% is a great clue, as I had previously never been able to understand when this occurs.
Independently of that, kevin1956murray, perhaps send an email to ChargePoint's
customer service and simply ask for a status on that last open 'ticket' you have?
Now, during my email exchanges my friend said that if anyone is interested in measuring an EVSE
pilot then here's a relatively-inexpensive kit to do that:https://www.tindie.com/products/nsayer/evse-tester/
The issue I see is having to make a J1772
breakout cable to be able to tap into the signal while using the EVSE
without actually opening up the box to do that.
'Nuff for now, as I'll be driving over 150 miles in my i-MiEV today and need to do my EVSE