2024 Mach-E charging curve comparison vs. 2021 Mach-E

Nolanbro · May 30, 2024

Hi everyone. I took the liberty to import Kyles data into excel and compare it with mine and an older mach-e curve

Gray is 2024-Tested on V3 Supercharger
Orange is mine on latest powertrain software (2021 FE)-Tested on V3 Supercharger
Blue is an older test(i forget who did it)-EA Signet Gen3

EDIT: The orange curve is using KW into battery pack not delivered to car, so figure about 6-7kW less than what charger shows. From what I remember my Mach-E takes about 39 mins to go 10 to 80%. Its definitely faster than what ford quotes, and its usually a little faster on Tesla compared with EA (idk why but its only about a 2 min difference)

Ford Mustang Mach-E 2024 Mach-E charging curve comparison vs. 2021 Mach-E 1717110667756-g0

Mach-Lee · May 30, 2024

New curve is good. We're getting closer to a straight line of gradual decreasing speed which is how it should be. Only one big dip there which might have been the Supercharger.

There's nothing wrong with your orange and blue lines, those are just two different powertrain software versions. The orange line is the current version we have, blue is older software. It's not due to losses, during DC charging losses are very minimal less than 1% typically so you typically don't need to worry about them.

Nolanbro · May 30, 2024

Mach-Lee said:
New curve is good. We're getting closer to a straight line of gradual decreasing speed which is how it should be. Only one big dip there which might have been the Supercharger.

There's nothing wrong with your orange and blue lines, those are just two different powertrain software versions. The orange line is the current version we have, blue is older software. It's not due to losses, during DC charging losses are very minimal less than 1% typically so you typically don't need to worry about them.

I'm glad that ford has increased it over time. I noticed that the charge rate does taper closer to 75% instead of 80% now. Would be nice if they could hold the 110 kW range for a little longer. To be fair, in the last charging session I did kill my HVBJB so maybe they got too aggressive LOL. My guess is the drop to 75kW likely won't happen and it will be a more linear drop. Wonder if ford would have better luck limiting charging to 350 amps until it reaches the voltage cutoff and then starts to taper then.

Nolanbro · May 30, 2024

Mach-Lee said:
New curve is good. We're getting closer to a straight line of gradual decreasing speed which is how it should be. Only one big dip there which might have been the Supercharger.

There's nothing wrong with your orange and blue lines, those are just two different powertrain software versions. The orange line is the current version we have, blue is older software. It's not due to losses, during DC charging losses are very minimal less than 1% typically so you typically don't need to worry about them.

Speaking of losses. The reason I say it's lower is the battery was heating itself until about 35% which would mean that the charger would show about 6kW higher speed as it's going to battery heating. The mach-e has a very weird logic between battery heat and cooling. It seems to run the heater until the battery max temp reaches 95f, then sits for about 2 to 3 minutes doing nothing, and then max cooling. Seems pretty inefficient to me.

Jimrpa · May 30, 2024

I’m confused - is the X-axis time? It’s labeled “SOC” (which I assume is state of charge)? Shouldn’t time be taken into account?

Nolanbro · May 30, 2024

Jimrpa said:
I’m confused - is the X-axis time? It’s labeled “SOC” (which I assume is state of charge)? Shouldn’t time be taken into account?

I don't have the time figures minute by minute for my car. Just a start and end time. It appears that the new curve saves somewhere in the neighbourhood of 4-6 minutes when comparing with the newest software.

AtomicInternet · May 30, 2024

Don't some of the 2024 models have LFP batteries? Or is that only Premium standard range still?

I'm assuming the one you tested is still Li-Ion

Jimrpa · May 30, 2024

Nolanbro said:
I don't have the time figures minute by minute for my car. Just a start and end time. It appears that the new curve saves somewhere in the neighbourhood of 4-6 minutes when comparing with the newest software.

The start and end times for each curve would be helpful. (Or the durations of each curve, which should provide the same info).

Nolanbro · May 30, 2024

AtomicInternet said:
Don't some of the 2024 models have LFP batteries? Or is that only Premium standard range still?

I'm assuming the one you tested is still Li-Ion

The blue and orange curves are one 2021 mach-e extended range. So NCM battery.
The 2024 is an extended-range GT I believe, possibly a premium. Regardless it is an NCM battery.

I don't know if the LFP has the same curve or not. My guess is it might be similar but have an earlier taper in kW.

In terms of what battery is in what trim you can get a LFP or NCM battery in Select and Prem

Nolanbro · May 30, 2024

Jimrpa said:
The start and end times for each curve would be helpful. (Or the durations of each curve, which should provide the same info).

I'll see what I can do. Theres a few charging sessions on my car I logged and I can try and pull time data.

Jimrpa · May 30, 2024

Nolanbro said:
I'll see what I can do. Theres a few charging sessions on my car I logged and I can try and pull time data.

No worries. Please don’t go to a lot of effort - I’m just curious. To be, if I’m spending 39 minutes versus 32 minutes charging, it wouldn’t matter. If I was spending 15 minutes instead of 39 minutes, it would matter a lot ?

Nolanbro · May 30, 2024

Jimrpa said:
No worries. Please don’t go to a lot of effort - I’m just curious. To be, if I’m spending 39 minutes versus 32 minutes charging, it wouldn’t matter. If I was spending 15 minutes instead of 39 minutes, it would matter a lot ?

I honestly think the difference is only a couple of minutes at most. I think range replinishment speed is more important, but we don't know the real range figures for 24 yet. If its a 4-minute time difference but its equivalent to 40 miles, that could be more significant.

If that's confusing sorry it's hard to explain over text.

Other thing to note is my car has about 5% degradation, but the 24s are fresh packs, so my times likely are a little off

Jimrpa · May 30, 2024

Nolanbro said:
I honestly think the difference is only a couple of minutes at most. I think range replinishment speed is more important, but we don't know the real range figures for 24 yet. If its a 4-minute time difference but its equivalent to 40 miles, that could be more significant.

If that's confusing sorry it's hard to explain over text.

Other thing to note is my car has about 5% degradation, but the 24s are fresh packs, so my times likely are a little off

I see what you mean. I can see why “range replenishment” is more important. My own habit is to go ahead and run to 85% if I’m at a DCFC, regardless of what the route plan calls for. I’d rather take the time to stretch my legs and be excessively conservative.

Nolanbro · May 30, 2024

Jimrpa said:
I see what you mean. I can see why “range replenishment” is more important. My own habit is to go ahead and run to 85% if I’m at a DCFC, regardless of what the route plan calls for. I’d rather take the time to stretch my legs and be excessively conservative.

Hahaha I'm the opposite. Last week I pulled into a charger on 0% and didn't even break a sweat. I'm used to my niro which liked to be plugged in dead so I always target a 2% arrival and then leave as soon as it tapers under 100kw

It actually annoys me that ford route planner isn't more accurate and does 5% arrivals. 10 is too high in my book

Fremont Kid · May 30, 2024

Jimrpa said:
I’m confused - is the X-axis time? It’s labeled “SOC” (which I assume is state of charge)? Shouldn’t time be taken into account?

You are correct. Knowing the intersecting point, i.e. where the three charge curves cross at the same SOC, is helpful. The time line would show how quickly each reaches the intersecting point SOC.

2024 Mach-E charging curve comparison vs. 2021 Mach-E

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