DCFC precondition temp

[Firn]

For those who monitor your car regularly, what temp do you see the battery warmed to when preconditioning for DCFC?

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[mparz00]

Firn, this has been discussed in a number of threads. Unless something changed in a recent update, the Lightning does not precondition the HV battery. Only the MachE has this feature.

 

[WaterboyNorCal]

Uh, what? If “the Lightning does not precondition the HV battery”, why on earth would Ford explicitly say that it does? Furthermore, this has been discussed at length on Reddit and the various F150 Lightning forums, and this is the first time anyone has suggested that it’s only the Mach-E that preconditions for DCFC. Mparz00- please kindly cite your sources.

 

[Lightning Rod]

Firn, this has been discussed in a number of threads. Unless something changed in a recent update, the Lightning does not precondition the HV battery. Only the MachE has this feature.

 

[B177y]

I have monitored my battery a few times while using Google Maps for nav to a DCFC and CarScanner for the data.

HVB temp has only risen to 59.8 deg F from a starting point that was 48 deg F.

The AC compressor (heat pump) and coolant heater (resistance heat) both are active and using power during this time.

 

[Firn]

I have monitored my battery a few times while using Google Maps for nav to a DCFC and CarScanner for the data.

HVB temp has only risen to 59.8 deg F from a starting point that was 48 deg F.

The AC compressor (heat pump) and coolant heater (resistance heat) both are active and using power during this time.

OK, that makes sense, thank you!

 

[TaxmanHog]

 

[electricpig]

I need to try this experiment. I have the update that allows Android Auto to trip plan and preconditin the battery, and also a scanner. I don't know the temp, but I can tell you I have had significantly improved charging when using the system, so I accept that pre-xonditioning the HVB is in fact taking place even though I have not checked the battery temp before charging.

 

[mparz00]

Here we go again... I guess since it was on reddit, it must be true and Ford's documentation is incorrect. This is the link that Ford sent me: https://www.ford.com/support/how-to...-mustang-mach-e-battery-for-dc-fast-charging/ . They specifically said the Lightning does not have this feature.

I will preface this that I have a '22 so not sure if Ford added this to a newer year model.

If someone has actual evidence of preconditioning while driving to L3 charger, or documentation from Ford, please post it.

 

[RickLightning]

My 2022 does not precondition the. 10.0.1 enables it. Mach-E received this update, Lightning did not.

The first 10 minutes of a DC fast charger devote 8 to 10kW to heating the battery, and speed clicks up as you watch.

 

[TaxmanHog]

Here we go again... I guess since it was on reddit, it must be true and Ford's documentation is incorrect. This is the link that Ford sent me: https://www.ford.com/support/how-to...-mustang-mach-e-battery-for-dc-fast-charging/ . They specifically said the Lightning does not have this feature.

I will preface this that I have a '22 so not sure if Ford added this to a newer year model.

If someone has actual evidence of preconditioning while driving to L3 charger, or documentation from Ford, please post it.

Search is your friend, we've gone over this umpteen times, that document the moco published was not complete in discussing every BEV they make, take it for granted that warming or cooling the battery is a intended process on all Ford battery driven vehicles. With various OTA updates they improved the timing of when it happens. External conditions and core battery temperatures drive the logic.

 

[Heliian]

If you're diving for an hour and going to a dcfc, your battery is probably close to temp.

 

[Calvin H-C]

If you're diving for an hour and going to a dcfc, your battery is probably close to temp.

From seven years of driving a Focus Electric, which has no battery preconditioning, I can reasonably say this is true.

Had one experience a few years ago on a pretty cold day (-10C/14F). Would need to charge to make it home, but didn't do so upon arrival when the car was warm as we had an appointment.

On our way back, we stopped at a DCFC a few minutes from where we were and it barely got to 18 kW. We had more than enough to get to the next DCFC about 20-25 minutes down the highway, so we got going.

That drive warmed up the system so it could charge at 48-50 kW, which is the typical rate on a warm day for the FFE.

 

[luebri]

If you're diving for an hour and going to a dcfc, your battery is probably close to temp.

I have been led to believe that highway driving (at least in cold weather) would not increase battery temp in any matter. It would need to be city driving in which there is Regen occurring from time to time.

That said, my personal experience is I have ~10 DCFC sessions in 15 to 40F temps, typically after driving for 60 - 90 minutes on the highway prior to, without preconditioning or attempting to precondition, and have never experienced a throttled session

In my experience preconditioning is simply not necessary except in the most extreme of conditions.

 

[RickLightning]

If you're diving for an hour and going to a dcfc, your battery is probably close to temp.

No, it's not. I just did it, and monitored it. One morning the battery was 21 degrees. After driving for 1.5 hours, it was 39.5 degrees.

I have been led to believe that highway driving (at least in cold weather) would not increase battery temp in any matter. It would need to be city driving in which there is Regen occurring from time to time.

That said, my personal experience is I have ~10 DCFC sessions in 15 to 40F temps, typically after driving for 60 - 90 minutes on the highway prior to and, without preconditioning or attempting to precondition, have never experienced a throttled session

In my experience preconditioning is simply not necessary except in the most extreme of conditions.

It increases it, but no where near what DCFC wants.

If you have never experienced throttled DCFC, then you haven't been monitoring with Car Scanner. I can tell you that nearly every DCFC session first thing in the morning, the session is throttled for about 10 minutes until the battery gets to temp. DCFC brings the battery to 95 degrees (or higher), and you can see the speed of charge climbing as the heater devotes 8 to 10kW to heat the battery to temperature.

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