Slow Charging Speed

[generaltso]

Thank you for this info. You are probably right. I was just reading the sticker with the capable output and didn't think about it being setup differently. It makes sense.

The good news is that your car is likely working as designed.

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[Tampamike]

I have the larger battery too and I usually figure about 20 miles added per hour on the mobile charger at home with the NEMA 14-50 plug. That’s about what your getting.

 

[SnBGC]

All good points. I only verified that the sticker showed it was capable of outputting 80 amps. I will have to find somewhere I can confirm a higher output and see if that makes any difference.

Yeah. In the Tesla world, it is a non issue because they can see their L2 charge speeds so they know if it is turned down or not.

We are kinda blind. The only real way to determine charge speed in the car is with a scan tool.

 

[Seth]

Yeah. In the Tesla world, it is a non issue because they can see their L2 charge speeds so they know if it is turned down or not.

We are kinda blind. The only real way to determine charge speed in the car is with a scan tool.

Will a basic OBDII wifi dongle be able to see this info? If so, what app should I use?

 

[daemonic3]

Will a basic OBDII wifi dongle be able to see this info? If so, what app should I use?

Carscanner app and ELM 327 Bluetooth OBD2
https://a.co/d/e99eBsc

 

[SnBGC]

Will a basic OBDII wifi dongle be able to see this info? If so, what app should I use?

It will probably tell you the pilot signal. You will have to convert it to the amp value. Some scanners will handle the conversion while others won't. I will try and fine it with my scanner and see what it looks like.

 

[daemonic3]

You can get it all with what I mentioned above using Carscanner, but you have to use that adapter. It's actually a good thing it's so tiny so you don't see it if you want to just leave it in the OBD2 port.

You get all kinds of stuff. I took this log sitting on a Volta L2 charger for fun. Here were some readings

HV AC VOLTAGE: ~203V
HV AC CURRENT: 39A
(implies L2 station was 7.9kW)
Now the charger inside the Mach has to convert to DC:
HV CHARGER OUTPUT VOLTAGE: ~377V
HV CHARGER OUTPUT CURRENT: ~19.5A
(implies AC->DC loss yields 7.35kW)
HV CURRENT: ~16.4A [negative]

Note that I was sitting in the car with it on, so HV battery fans running, stereo, a/c, and efficiency loss consumed 16% of that 19.5A. I'd have to test again with the car off to get any efficiency loss isolated.

Neat stuff if you want to have some fun.

 

[daemonic3]

Actually I just noticed you mentioned you have a OBD wifi dongle. I *think* any should work with Carscanner since it just asks for the IP and port so if you can guess right you should be money. But for sure it only supports that one Bluetooth adapter and it's cheap on Amazon.

 

[RMacon808]

Suddenly, same issue. Trying to pick up these threads to figure this out. 2023 MME AWD ER, L2 charger (ChargePoint Flex) less than a month installed. 60A circuit but have had Flex set at 32A just to see charge rate (and I don't need the speed based on driving).

Up until last night, consistent with some of the nominal numbers here -- between 7-8 kW charging, roughly 7% an hour, but now will not charge above 3 kW. Flex charger also consistently lost WiFi connection around the same time as this drop in charge rate, and still shows flashing white LED (Not connected) even though I am receiving data. Ford Pass tonight was completely confused as to its prediction when I would get to my 80% charge limit -- it was off by over a day based on previous numbers. Is this all related somehow?

As far as I can tell no other anomolies with battery heating -- garage is at a consistent 50-55F based on climate here in the winter and I have a small space heater to maintain that when it's colder.

Any help would be appreciated.

 

[Mach-Lee]

Suddenly, same issue. Trying to pick up these threads to figure this out. 2023 MME AWD ER, L2 charger (ChargePoint Flex) less than a month installed. 60A circuit but have had Flex set at 32A just to see charge rate (and I don't need the speed based on driving).

Up until last night, consistent with some of the nominal numbers here -- between 7-8 kW charging, roughly 7% an hour, but now will not charge above 3 kW. Flex charger also consistently lost WiFi connection around the same time as this drop in charge rate, and still shows flashing white LED (Not connected) even though I am receiving data. Ford Pass tonight was completely confused as to its prediction when I would get to my 80% charge limit -- it was off by over a day based on previous numbers. Is this all related somehow?

As far as I can tell no other anomolies with battery heating -- garage is at a consistent 50-55F based on climate here in the winter and I have a small space heater to maintain that when it's colder.

Any help would be appreciated.

The ChargePoint can act goofy when it loses its WiFi connection and can cause your charge to start and stop. If that happens you should cycle the breaker and wait for it to go back to green status. Failing WiFi boards is a known problem with the ChargePoint, so contact support about that if it doesn't work after a breaker reset (and you're sure there isn't WiFi interference).

 

[RMacon808]

The ChargePoint can act goofy when it loses its WiFi connection and can cause your charge to start and stop. If that happens you should cycle the breaker and wait for it to go back to green status. Failing WiFi boards is a known problem with the ChargePoint, so contact support about that if it doesn't work after a breaker reset (and you're sure there isn't WiFi interference).

Ok thanks, very good starting point for troubleshooting. I knew that my WiFi signal is spotty in the garage due to the performance of a wifi power meter I have on the electrical panel not far from there, but the Flex installed easily and other than a couple momentary drop outs it had worked fine for weeks after install until now. Hoping its not the Flex board issues you mentioned.

 

[RMacon808]

The ChargePoint can act goofy when it loses its WiFi connection and can cause your charge to start and stop. If that happens you should cycle the breaker and wait for it to go back to green status. Failing WiFi boards is a known problem with the ChargePoint, so contact support about that if it doesn't work after a breaker reset (and you're sure there isn't WiFi interference).

Quick update: Recycled the breaker and Flex appeared to reconnect (Green) for a few hours at least. The entire system - FordPass and the Flex -- appears to be totally confused since the breaker cycle. For the first time the car did not charge overnight even though plugged in, and just checking the app this morning seemed to start it charging and back to the baseline L2 levels I had after install. Fordpass either completely blank or if it is working shows completely wrong status or charging predictions. The Flex also same issue -- shows simultaneous Charging, Complete, Offline, Online, depending on what tab you look at.

Difficult to troubleshoot when you have awful software everywhere, and probably a shoddy Wifi connection, but as I said before none of these issues for 3+ weeks after Flex install. :O

The good news I suppose is that cycling the breaker seems to have restored charge rate, but now the scheduling function went MIA.

And just for clarity I only use charge scheduling on FordPass, not on the Chargepoint side.

Will keep at it and post to this thread for help as needed. Thanks.

 

[Mach-Lee]

Quick update: Recycled the breaker and Flex appeared to reconnect (Green) for a few hours at least. The entire system - FordPass and the Flex -- appears to be totally confused since the breaker cycle. For the first time the car did not charge overnight even though plugged in, and just checking the app this morning seemed to start it charging and back to the baseline L2 levels I had after install. Fordpass either completely blank or if it is working shows completely wrong status or charging predictions. The Flex also same issue -- shows simultaneous Charging, Complete, Offline, Online, depending on what tab you look at.

Difficult to troubleshoot when you have awful software everywhere, and probably a shoddy Wifi connection, but as I said before none of these issues for 3+ weeks after Flex install. :O

The good news I suppose is that cycling the breaker seems to have restored charge rate, but now the scheduling function went MIA.

And just for clarity I only use charge scheduling on FordPass, not on the Chargepoint side.

Will keep at it and post to this thread for help as needed. Thanks.

Set the charge schedule in the car on the screen. Do not try to change, edit, or view the charge schedule in FordPass because of known bugs and issues with cellular connectivity. Hopefully you get updated to 6.8.0 to fix some of these potential issues as well. OTAs may temporarily disrupt charging schedule until the next time the car is driven and parked.

 

[RMacon808]

Set the charge schedule in the car on the screen. Do not try to change, edit, or view the charge schedule in FordPass because of known bugs and issues with cellular connectivity. Hopefully you get updated to 6.8.0 to fix some of these potential issues as well. OTAs may temporarily disrupt charging schedule until the next time the car is driven and parked.

ok will try it. To date I have only used FordPass for anything to do with charging setup and it's been fine, but will try changes from the car UI and see if it brings some stability back here. Thanks again.

 

[ATL]

And just for clarity I only use charge scheduling on FordPass, not on the Chargepoint side.

You'll probably have better luck scheduling charging in-car, rather than via Ford Pass. I've had CPHF for a year now with no issues. I use the ChargePoint schedule to bracket the car schedule to be sure that if I charge outside the off-peak hours, it is intentional.

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