MME Charging Curve Data Collection

[Marcel]

Off a German review on YouTube...

Good starting point, at 80% it dropped to 12...

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[timbop]

Off a German review on YouTube...

Good starting point, at 80% it dropped to 12...

Link? I'd love to see the whole progression, as would others I am sure

 

[Marcel]

https://www.macheforum.com/site/thr...italy-france-and-spain.1388/page-5#post-77394

I don't want to post to much in this thread, they only show the start en the 80% mark.

 

[dbsb3233]

Here's the video. Found it by the title, but only a few quick snapshots shown.

Interesting screen at 22:22 that I'm not sure how to interpret (language and what it's referring to).

 

[Shayne]

Here's the video. Found it by the title, but only a few quick snapshots shown.

Interesting screen at 22:22 that I'm not sure how to interpret (language and what it's referring to).

Closed caption google translate is not perfect.

They note preproduction and a couple of other things?

 

[HVH]

It is the same as Kyle said in his video, drop to 11kw at 80%. They think the pre-production cars are not running the final BMS software and that it is a sort of safety for these handbuild cars not to stress the cables, battery etc.

 

[ChasingCoral]

It is the same as Kyle said in his video, drop to 11kw at 80%. They think the pre-production cars are not running the final BMS software and that it is a sort of safety for these handbuild cars not to stress the cables, battery etc.

These cars are preproduction but built on the same assembly line with almost final parts and procedures. These are not the hand built models.

 

[timbop]

I'm going to channel Aaron Rodgers again: R - E - L - A - X

Even if the software hasn't changed yet, that curve won't stay like that. They'll get user complaints AND data from the BMS in the field. It will eventually be changed even if that is the current curve. Conservative company taking it slow to make sure they don't cook people's batteries.

Range, the charging curve, and probably performance will improve over time. I'd bet real money on it.

 

[SteveUk]

Why do you think range will improve ?

 

[timbop]

Why do you think range will improve ?

They will tweak their algorithms, and possibly free up some of the 11% buffer for use. Just like Tesla has done

 

[GoGoGadgetMachE]

I know everyone is worked up about the charging curve so I drew up what we know so far. Really using my bachelor's degree and computer pen for high quality work... but I guarantee it's completely accurate.

This picture should completely settle the matter until we have production cars available.

 

[dbsb3233]

I'm going to channel Aaron Rodgers again: R - E - L - A - X

Even if the software hasn't changed yet, that curve won't stay like that. They'll get user complaints AND data from the BMS in the field. It will eventually be changed even if that is the current curve. Conservative company taking it slow to make sure they don't cook people's batteries.

Range, the charging curve, and probably performance will improve over time. I'd bet real money on it.

Hoping that 11 kW at 80% doesn't just "improve". More like "soar". I'd expect something near 50 kW on the tail end of the curve, not 11 (or 13). That's the part that's so shocking, not just that it's low, but that it's WAAAY low.

The usual caveats apply, of course. And even if it doesn't soar, it's not the end of the world because most of us will almost never DCFC charge beyond 80% anyway. But there could be some unusual times where it's needed.

 

[ajmartineau]

Not cool

 

[SteveUk]

Is it unhealthy for the battery to push high kw into it when you go above 80%

 

[Shayne]

I'm going to channel Aaron Rodgers again: R - E - L - A - X

Even if the software hasn't changed yet, that curve won't stay like that. They'll get user complaints AND data from the BMS in the field. It will eventually be changed even if that is the current curve. Conservative company taking it slow to make sure they don't cook people's batteries.

Range, the charging curve, and probably performance will improve over time. I'd bet real money on it.

They will tweak their algorithms, and possibly free up some of the 11% buffer for use. Just like Tesla has done

Complaints sometime help? One would assume they would require merit.

Can you point us to an official statement regarding your comments about the future?

If it is not a hardware problem it can be fixed OTA therefore possibly right. I have not seen anything official about that to date so hard to draw any solid conclusions. Taking a 100 KWh mustang and cutting it down to 70 does not feel like mustang DNA. Guess, with the facts to date, some feel currently that the Electric Mustang has been castrated. One would think LG has been making batteries for awhile and is not lightyears behind Panasonic so I lean towards guessing conservatism also (possibly bean counters). Wonder if that will ever change?

If it was 94 KWh usable (270 mi EPA) instead of 88 (250) and you could charge to 90% for those few cold travel days, when we need it, I would have been smiling. A couple of Norwegian's got that. Bottom line is the hardware is sitting their and some would like Ford to tell us it is not a hardware problem, as you noted, and that they hope to grow a pair in the future. Appears right now we have two birds in the bush and a vehicle, with current specs, that has a limitation of around -10 oC @ 105 km/hr winter travel up here. Not what I was hoping for when I anteed up for the 100 KWh pack.

Is it unhealthy for the battery to push high kw into it when you go above 80%

It currently has a every large buffer so when charging reaches 80% it is not at 80%. Appears minor degradation occurs to some that SC Tesla's too often. Our fast chargers for the MME are currently only 50 KW and the charging curve appears to be not user friendly at this point.

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