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by kevin1956murray
Fri Mar 22, 2019 12:59 pm
Forum: EVSE (Charging Stations)
Topic: ChargePoint Charging Question
Replies: 40
Views: 3944

Re: ChargePoint Charging Question

Below is an email I just got from ChargePoint. The issue of slow charging after the pause has been escalated, hopefully to someone within ChargePoint who understands pilot signals and possible interactions with MiEVs. Hi Kevin, Thank you for your patience in this matter, and the extensive research y...
by kevin1956murray
Thu Mar 14, 2019 12:24 pm
Forum: EVSE (Charging Stations)
Topic: ChargePoint Charging Question
Replies: 40
Views: 3944

Re: ChargePoint Charging Question

Below is today's charging trace. Each upswing back to 3kW is due to my calling Chargepoint to get them to reboot that station.

Image
by kevin1956murray
Thu Mar 14, 2019 10:58 am
Forum: Batteries and Battery Management
Topic: Weird Charging Curve
Replies: 21
Views: 3113

Re: Weird Charging Curve

When a ChargePoint station charges at just 1.1kW after a MiEV induced pause, I have found that calling ChargePoint and asking them to reboot that station will get the rate to return to 3kW, without having to physically go to the car to start a new session.
by kevin1956murray
Thu Mar 14, 2019 10:53 am
Forum: EVSE (Charging Stations)
Topic: ChargePoint Charging Question
Replies: 40
Views: 3944

Re: ChargePoint Charging Question

I have found that when a MiEV is stuck at a ChargePoint charging rate of just 1.1kW (after each pause), then calling ChargePoint and asking them to reboot that station (remotely) will get the charge rate back to 3kW. So now bets can be placed on how long it will take them to get tired of that, and m...
by kevin1956murray
Thu Feb 28, 2019 8:09 am
Forum: EVSE (Charging Stations)
Topic: ChargePoint Charging Question
Replies: 40
Views: 3944

Re: ChargePoint Charging Question

I've pointed out to Chargepoint that I do not see low kW charging after the pause at home, and I have pointed out that re-initializing a Chargepoint session gets immediately back to the good 3kW rate. It is coming out of the pause where the charging seems to get stuck at 1.1kW. Below is Chargepoint'...
by kevin1956murray
Tue Feb 26, 2019 10:38 am
Forum: Batteries and Battery Management
Topic: Weird Charging Curve
Replies: 21
Views: 3113

Re: Weird Charging Curve

I have no evidence of 120V. The reduced charge rate of 1.1kW equates to just about 4 miles gained per hour, down from the 12 miles gained per hour that I want (for the whole charge). 4 miles gained per hour is what my 120V cord can do.

The station is Chargepoint, with no third party involved.
by kevin1956murray
Mon Feb 25, 2019 7:23 pm
Forum: Batteries and Battery Management
Topic: Weird Charging Curve
Replies: 21
Views: 3113

Re: Weird Charging Curve

I am seeing the charging reduction to 1.1 kW after the pause. I believe this must be some 'handshake' issue, where the station does not recognize that the car should get 240V again. I think maybe Chargepoint software/firmware is interpreting the i-MiEV's pause as an error, and they play it safe (hed...
by kevin1956murray
Sat Feb 02, 2019 6:28 pm
Forum: EVSE (Charging Stations)
Topic: ChargePoint Charging Question
Replies: 40
Views: 3944

Re: ChargePoint Charging Question

Below I hope to paste a complicated charging power 'trace' from last week. It started at about 2.2kW, since another car was also charging. While I was away it looks like it blipped up to 3kW, likely when the spot next to the MiEV was available for a few minutes. Then it did the usual drop to zero, t...
by kevin1956murray
Fri Feb 01, 2019 4:12 pm
Forum: EVSE (Charging Stations)
Topic: ChargePoint Charging Question
Replies: 40
Views: 3944

Re: ChargePoint Charging Question

I have opened a new ticket with Chargepoint, since I think their explanation misses the point. My request to them is pasted below (minus the screenshots I emailed them). Dear Chargepoint: Ticket #1257292 was closed out with an explanation which does not match the facts/observations. My Mitsubishi Mi...
by kevin1956murray
Fri Feb 01, 2019 11:12 am
Forum: EVSE (Charging Stations)
Topic: ChargePoint Charging Question
Replies: 40
Views: 3944

Re: ChargePoint Charging Question

Below is Chargepoint's reply. They say the drop is due to a car pulling current from the other half of the station. I don't think it is correct, since the first time the severe drop happened I went back and replugged my car in. I do not recall another car being plugged in next to it. But I'll be wat...

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