Battery Degradation

[Mustangor]

The range of an electric vehicle (EV) is not a fixed number but varies depending on the conditions. For instance, if you were driving it locally at 80 kilometers per hour, your range would be a specific value. However, if you take a road trip and suddenly increase your speed to 120 kilometers per hour, the range will significantly decrease due to the additional speed. Additionally, the range decreases with speed and temperature. Therefore, it is advisable to use a route planning application like ABRP instead of relying solely on the range meter displayed on the vehicle.

Since you have LFP pack, make sure you are charging it to 100% every couple weeks to calibrate the battery.

I know that the range depends on multiple factors, including wind, altitude, rain, temperature, etc. And it's OK if the range changes during a trip. But it's not OK to see my car at full charge, at home, give 440km estimated range one day, and 380km a few days later with the same climate conditions. And, BTW, I have an NMC pack.

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[Maquis]

I know that the range depends on multiple factors, including wind, altitude, rain, temperature, etc. And it's OK if the range changes during a trip. But it's not OK to see my car at full charge, at home, give 440km estimated range one day, and 380km a few days later with the same climate conditions. And, BTW, I have an NMC pack.

If you try to make sense of that number, it will drive you mad. Just ignore it and be happy.

 

[RickMachE]

I know that the range depends on multiple factors, including wind, altitude, rain, temperature, etc. And it's OK if the range changes during a trip. But it's not OK to see my car at full charge, at home, give 440km estimated range one day, and 380km a few days later with the same climate conditions. And, BTW, I have an NMC pack.

Then you might want to either cover the range with tape, or sell the vehicle. Lack of understanding that your historical driving impacts the range prediction is a fault of the owner, not the car.

Of course the fact that gas vehicle range projections change based on historical driving seems to be something that a huge number of owners never understood.

 

[MadMatt]

the fact that gas vehicle range projections change based on historical driving seems to be something that a huge number of owners never understood.

The range estimator in my old 2014 ICE Focus jumps around like crazy. way more than the both of my EV's ever have (2017 Focus Electric and MachE)

I don't get the obsession either, just monitor battery percentage. You often drive a similar route on a daily basis. So from my house to a certain bridge normally takes 5 or 6% and so on...

Back with ICE cars we would look at the fuel gauge. Now with EV's people are obsessed with the GOM, which happens to be even more accurate than ICE ones ever were.

with an OBD scanner it becomes even easier. you get to see your remaining kwh of energy and your instant use in kwh. So if I'm cruising on the highway and see around 25kwh use with a battery remaining capacity of 50 or so kwh, i know i can do another 2 hours roughly of this sort of driving.

 

[Mustangor]

Try doing a battery calibration first, that will probably bring the capacity estimate up some: https://www.macheforum.com/site/threads/hv-battery-calibration-procedure.23815/

I finally depleted my battery almost completely. The MME is currently charging in AC and will be at 100% tomorrow morning. Let's see if I notice any change in HVBSoH.

I noticed a difference of about 5% between the battery capacity displayed oh the dashboard and the value in AATorque obtained via OBD dongle. I suppose this is some kind of "reserve" ?

 

[mkhuffman]

I finally depleted my battery almost completely. The MME is currently charging in AC and will be at 100% tomorrow morning. Let's see if I notice any change in HVBSoH.

I noticed a difference of about 5% between the battery capacity displayed oh the dashboard and the value in AATorque obtained via OBD dongle. I suppose this is some kind of "reserve" ?

The BMS needs more than one cycle to adjust. Run it down again and then charge it back up again. That should help.

 

[Maquis]

The BMS needs more than one cycle to adjust. Run it down again and then charge it back up again. That should help.

It also needs a rest period at both ends of the cycle.

 

[Mach-Lee]

I finally depleted my battery almost completely. The MME is currently charging in AC and will be at 100% tomorrow morning. Let's see if I notice any change in HVBSoH.

I noticed a difference of about 5% between the battery capacity displayed oh the dashboard and the value in AATorque obtained via OBD dongle. I suppose this is some kind of "reserve" ?

You didn't do the rest period, that's important. Don't charge it immediately, let it sit at 5% for a number of hours first. Not sure the calibration will work since you skipped that.

 

[Mustangor]

You didn't do the rest period, that's important. Don't charge it immediately, let it sit at 5% for a number of hours first. Not sure the calibration will work since you skipped that.

Yes, I couldn't respect the rest period because I had to use the car this morning, and it takes about ten hours to fully charge it with my wallbox. So I did all this for nothing, because the HVBSoH it's still at 91,5% :

 

[mkhuffman]

Yes, I couldn't respect the rest period because I had to use the car this morning, and it takes about ten hours to fully charge it with my wallbox. So I did all this for nothing, because the HVBSoH it's still at 91,5% :

On a side note, I like how you have that information on the display! Is it a car play box?

 

[Mustangor]

On a side note, I like how you have that information on the display! Is it a car play box?

You want to start with a simple Bluetooth OBD Dongle paired with your Android Phone. Get the Torque Pro app on the play store and go visit the thread related to Mach-E extended PIDs HERE. Import the PIDs in Torque Pro. Then go to the Github page of Inside4android to register to the beta test version of AATorque, which is the frontend of Torque Pro. Then it's only a matter of configuring the dashbord as you see fit, because AATorque is Android Auto compatible and will display on the second part of your main screen ! No root, no hardware.

 

[Mustangor]

Well, I have my battery depleted again, as you can see :

The battery is not completely empty, however, there is still this small amount of "reserve" indicated by Torque Pro :

Now, to my question. I dont' have to use my car until tomorrow evening. Is it better to let the battery empty all night long, start the charge tomorrow morning, and use the car almost immediatly after the end of the charge, OR start the charge in 5 hours and let the battery full at rest for another6+ hours ?

 

[E90alex]

Start the charge in 5 hours so it can sit full for a few hours

 

[Mustangor]

Start the charge in 5 hours so it can sit full for a few hours

Ok, Thank you.

 

[Regularmache]

Our F150 Hybrid Distance to empty is often way lower even after refueling as our driving patterns are erratic. So instead of 600 Miles to empty when the tank is full, it'll show 443 miles upon startup and then stay at that number for 50 or 60 miles while the fuel Gauge moves down. It doesn't drop mile for mile with the odometer as it's a 'Guess o meter as well. If we drive more or less efficiently, adjustments are automatically calculated. It's not different as our MachE distance to 0 miles number. Mentally I just ignore DTE and look at the fuel Gauge. Same for the MachE, we just watch the battery "gauge". FWIW.

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