Finally personally saw the difference between battery preconditioning and no battery preconditioning

dbsb3233

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Minor impact, but there is one downside to preconditioning en route... it consumes extra kWhs that you need to add back in when you get to the station. Not sure how much (a couple of kWh maybe?), but that does offset a little of the time savings and costs a few quarters more.
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Minor impact, but there is one downside to preconditioning en route... it consumes extra kWhs that you need to add back in when you get to the station. Not sure how much (a couple of kWh maybe?), but that does offset a little of the time savings and costs a few quarters more.
Since the battery remains warm for while, I wonder just how much preconditioning is required on the second or third stop of the day?
 

bshaw

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Since the battery remains warm for while, I wonder just how much preconditioning is required on the second or third stop of the day?
Depends on the ambient temperature. If it's below freezing (winter temps), I would guess you would lose at least 20-30 degrees in ~3-hours at highway speeds since the previous DCFC session. Someone with CarScanner could test this pretty easily.
 

bbulkow

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You can only have 1 destination routing at a given time. If you set a destination in Ford Nav, it will cancel out your CarPlay / AA app destination. If you flip back to the app and reset the destination, I am pretty sure it will cancel the Ford Nav destination (and precondition).

Use your preferred app in AA to navigate to within ~20-minutes of your DCFC destination. At that point, flip to Ford Nav and give it the same DCFC destination and let Ford Nav guide you for just those 20 minutes. I will usually flip back into Waze for alerts (no destination), and let Ford Nav route from the background. Seems like the best of both considering the constraints of the vehicle software.
That's my assumption / guess too, since turn-by-turn has only one destination, thus the preconditioning would stop. Do you have direct evidence this is true (used OBD2 to measure precondition watts stopping when flipping back)?

I remember the preconditioning starts some distance (I think it's distance not time?) away from the charger, but the battery stays warm, so one would optimally have a fast charger as the destination from about 20 minutes, but one could switch back just before arriving. I find Ford nav is particularly bad at the last few turn-by-turn steps to actually reach anywhere, so I'd probably flip back close to arrival time.

Ford's intermediate routing in traffic isn't as good as Google's either, I think, which means realistically I'd have my phone in my lap double checking Ford's route as I go. If this was a common use for me, I'd probably just get a phone holder to enable having phone + Ford. I guess that's not terrible because I'd want to use OBD2 to monitor temp and power, I'm the curious sort.

If I was really road tripping, I'd probably have either a co-pilot, or a tablet. Two cars ago I had a tablet mount that was pretty good - bolted in solidly to one of the bolts of the passenger seat and was kinda like a gooseneck - but with Android Auto I gave up that hack. Sigh.

What a mess.

Precondition button, Ford? Even better, charging app with battery temp, precondition button, charge speed / charge parameters (volts and amps requested and supplied)? Pretty please?
 

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Whatever works for you. I wouldn't have an EV if I didn't have a 240 volt EVSE. I'm retired also but I've never lived in a town or apartment. I do have gates attached to my horse pastures.
The good news is we are daily caregivers for our granddaughter and our daughter and son-in-law installed a level two charger at their house for us to use each day?
 


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To improve DC Fast Charging performance in cold or hot weather, your Mustang Mach-E vehicle is equipped with En-Route Preconditioning.

Here is a helpful link:
En-Route to DC Fast Charging - Preconditioning
 

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I didn’t directly compare charging with and without preconditioning, but I did precondition the car on this trip using Ford navigation to get to the EA charger in Yuma and it was the first time I saw a peak charge rate of 162 kW.
We recently bought a house in Goodyear Az, and have taken two road trips to San Diego in the last year and always stop in Yuma to charge both ways.. (and to get some really good brisket)
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