L2 charging speed recently dropped 33%

[jeffMachE]

Broke down and ordered a new Emporia charger to replace my ancient JuiceBox. Emporia is set to deliver 40 amps. Will monitor it tonight on a longer charging session, but I've got it on the charger now and its humming along at 9.4 kW (granted, only about 5 minutes into a charging session). With my Juicebox, I'd see it start out at 9.6 kW, but drop to 6 after a couple of minutes and them bounce around between 4 and 8 kW for the remainder of the charging session. I limited my Juicebox to 32 amps (when I could still connect to it) and the curve got flatter, but still had a lot of jumping around between 4.5 and 6 kW.

BTW, decided to get the Emporia with the Tesla connector since I have an adapter from A2Z and chances are that the next EV we get will have the NACS plug rather than CCS. In my extremely limited experience so far, the adapter works seamlessly.

First charging session (only 7.5kWh, 82% to 90%) stayed at full rate for the duration of 40-ish minutes. Car is in full sun, outside temp is 82. Makes it pretty clear to me that my old JuiceBox was part of, if not the entire problem, at least for my car. No way to extrapolate this to other cars.

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[Shayne]

Mine has nothing to do with the charger unless my dealer also has sloppy connection's on their charger. Sloppy connection's are pretty common. Like when you plug a lamp into the wall or your phone into charge it is hit or miss due to sloppy connection. What a joke this is becoming pointing fingers at chargers due to a hardware defect on the car. Limp mode for the HVBJB and limp mode for L2 charging. The age of disinformation will not change the fact of what my problem is. The facts are clear it is the car. I guess after installing the L2 melting and burning smell software and jacked me around for over a year if I am looking to get the car fixed legal may be my only way.

@Murse-In-Airy has 2 MME one works one does not on the same charger. Guess it is just a sloppy charger for one of the cars. The attempt at positive PR for a defect in the car is just a bad joke of disinformation. Maybe a new charger will help that?

 

[markboris]

@Murse-In-Airy has 2 Mach-E one works one does not on the same charger. Guess it is just a sloppy charger for one of the cars. The attempt at positive PR for a defect in the car is just a bad joke of disinformation. Maybe a new charger will help that?

Same here. I've mentioned this probably 3 times on this thread? I have an Emporia charger (the brand makes no difference) and my car charges solid at the 48A setting. No issues, variations or anything. However, I've had 5 other Mach-E's here (all members) and 2 of them had issues. One would do the yo yo charging if it was higher than the 32A setting. The other will not even begin charging if I start out with anything higher than the 24A setting. I found that really strange. Also had to plug and unplug a few times to get going.

 

[Shayne]

Same here. I've mentioned this probably 3 times on this thread? I have an Emporia charger (the brand makes no difference) and my car charges solid at the 48A setting. No issues, variations or anything. However, I've had 5 other Mach-E's here (all members) and 2 of them had issues. One would do the yo yo charging if it was higher than the 32A setting. The other will not even begin charging if I start out with anything higher than the 24A setting. I found that really strange. Also had to plug and unplug a few times to get going.

Good to here from a voice of reason and facts. Not a fan boy that will lower their professional obligation and misinform. Ford needs to fix this. I have acknowledgment and duplication of the problem at my dealers now. Still they have no help or direction from @Ford Motor Company. Possibly something in the 4th quarter is all I got.

9.28 hours for 66% on a 10 KW charger at my dealers. Same shit that has been going on at my place for over a year. Ever since the L2 melting and burnt smell software.

 

[Murse-In-Airy]

And the wife’s car is confirmed to still not be charging at the set rate. While I didn’t stay up all night to take pictures of the numbers from the OBD,
We got home yesterday from Maine and arrived with 23% charge. Home location was set to 100% (had forgotten to dial it back from charging up before we left for Maine). The Grizzl-E was set to 40amps. The car did NOT start charging outside the 8 hour charge window. So it obviously read the 40 amps available and decided the window was good enough. However I wake up this morning and the car charged to 85%. It was set to add 77% and only managed 62%. So it was 20% slower than it should have been.
Back to derating the charger to 32 amps so the car can at least plan appropriately. If I needed 100% again today I would be sorely disappointed.

 

[Shayne]

And the wife’s car is confirmed to still not be charging at the set rate. While I didn’t stay up all night to take pictures of the numbers from the OBD,

We got home yesterday from Maine and arrived with 23% charge. Home location was set to 100% (had forgotten to dial it back from charging up before we left for Maine). The Grizzl-E was set to 40amps. The car did NOT start charging outside the 8 hour charge window. So it obviously read the 40 amps available and decided the window was good enough. However I wake up this morning and the car charged to 85%. It was set to add 77% and only managed 62%. So it was 20% slower than it should have been.

Back to derating the charger to 32 amps so the car can at least plan appropriately. If I needed 100% again today I would be sorely disappointed.

Me also it has nothing to do with what it is doing it is how long it takes to do it. Bought and paid for the 4x and it had (for 2.5 years) the fastest home charging speed at that time. Differences between 32 and 40 amps is noticeable. 40 amp was ok it charged quick enough with 8 hours full charge. 32 amp was too slow and the Ford portable charger that came with the car was not going to cut it. The 80 to 100 when needed is just brutal on me ever since the software was installed.

The OP had a 48 amp charger.

0.8 x 40 = 32 amp (20 percent reduction in speed)
0.67 x 48 = 32 amp (33 percent reduction in speed)

It does bounce up and down as I have seen it higher at 8.3 Kw (40 amp) here and 8.7 Kw (over 40) at the dealers. Have no idea what it is doing but it is slow. Hours longer.

You need to increase your window to 11 hours if you want to hit target . Spending half your life at home charging sounds not too bad. She does not need to make that meeting this morning anyway. Not about the problems for them with this new tech it is them aggressively not dealing with them that is. Software to fix defective hardware does not work. They found that out with the HVJB but are trying it again. Thinking it must be cheaper for them.

 

[Clockwork]

No problems using a Tesla Wall Connector at 240V/48A.

 

[Shayne]

No problems using a Tesla Wall Connector at 240V/48A.

You mean no problem with your car? No one in this thread has a charger problem it is a car problem. Not everyone has this problem, not many of us but Ford still refuses to fix those that do.

 

[jeffMachE]

You mean no problem with your car? No one in this thread has a charger problem it is a car problem. Not everyone has this problem, not many of us but Ford still refuses to fix those that do.

Not entirely true. I had this problem (or at least the symptoms) with my car and an old JuiceBox. Charged at full 40 amps for 2+ years, then after an update would jump around (9kW down to 4-6 kW, back to 8, back to 6, etc.) Replaced the JuiceBox with a new Emporia charger set to 40 amps and have had zero charging slow downs in the 2 weeks I've had it. Charges at the full 40 amps until the taper starts right before 90% (I have it set to charge to 90%).

 

[Shayne]

Not entirely true. I had this problem (or at least the symptoms) with my car and an old JuiceBox. Charged at full 40 amps for 2+ years, then after an update would jump around (9kW down to 4-6 kW, back to 8, back to 6, etc.) Replaced the JuiceBox with a new Emporia charger set to 40 amps and have had zero charging slow downs in the 2 weeks I've had it. Charges at the full 40 amps until the taper starts right before 90% (I have it set to charge to 90%).

Ya that is why my car charges like a dud at the dealers also different charger same car. Not getting into the obvious anymore or the PR of disinformation that goes on on this site. Let me guess never a problem with the HVBJB either.

 

[Clockwork]

You mean no problem with your car? No one in this thread has a charger problem it is a car problem. Not everyone has this problem, not many of us but Ford still refuses to fix those that do.

I'm not disagreeing? I think your problem clearly needs to be reviewed and addressed. I am not sure why it hasn't been.

Since I haven't read all 57 pages or looked at your post history, have the been able to replicate at the dealership? What do they say?

It should be a clear case. I am sure they have inventory they need to charge that they could compare it to and/or have some type of indication from Ford whether the throttling you are experiencing is normal (it's clear it isn't).

I feel for you, man.

 

[Shayne]

I'm not disagreeing? I think your problem clearly needs to be reviewed and addressed. I am not sure why it hasn't been.

Since I haven't read all 57 pages or looked at your post history, have the been able to replicate at the dealership? What do they say?

It should be a clear case. I am sure they have inventory they need to charge that they could compare it to and/or have some type of indication from Ford whether the throttling you are experiencing is normal (it's clear it isn't).

I feel for you, man.

Yes it has been to the dealer and as noted a page ago it took 9.28 hours to charge it 66% there on a 10 Kw Ford hardwired charge. Here it is charging at home this morning trying to get it to 100%

Got to a 150 kw fast charger switched once but could not get it over 60 kw. When it hit 80% it drop to 40 Kw. Understandable must have been burning up at that 60

 

[tuminatr]

Yes it has been to the dealer and as noted a page ago it took 9.28 hours to charge it 66% there on a 10 Kw Ford hardwired charge. Here it is charging at home this morning trying to get it to 100%

Got to a 150 kw fast charger switched once but could not get it over 60 kw. When it hit 80% it drop to 40 Kw. Understandable must have been burning up at that 60

In fast charging it makes a huge difference if you set the charger as your destination in Ford navigation. This triggers your car to preheat the battery for optimal charging. Your speed over 80% seems normal.

 

[Shayne]

In fast charging it makes a huge difference if you set the charger as your destination in Ford navigation. This triggers your car to preheat the battery for optimal charging. Your speed over 80% seems normal.

After driving 3.5 hours and depleting the batteries guess they were not warm enough. PlugShare and ford nav subscription is a never go for this vehicle. Not interested in paying for more ford software

 

[Tampamike]

In fast charging it makes a huge difference if you set the charger as your destination in Ford navigation. This triggers your car to preheat the battery for optimal charging. Your speed over 80% seems normal.

But you know about the drop at 80% when DCFC’ing right? That it’s normal?

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