Charging over 80% daily

[BadgerGreg]

so if I plug it and leave it over night, it may charge to 100% daily. Is that not good for battery?

90% is good for daily use, but don't be afraid to charge it to 100% occasionally; especially if you are heading out on a road trip. Charging to 100% is just fine if you're planning to head out within a few hours of charging to 100%. Just don't charge to 100% and leave the car sitting in the garage for a day or two.

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[kkgg]

looks like there is a limit I can set for daily overnight charging.
Once I set the limit(per say 80%) I can just keep it plugged overnight(or till I unplug) and the charge will never exceed my set limit.
I think I am good now

 

[timbop]

looks like there is a limit I can set for daily overnight charging.
Once I set the limit(per say 80%) I can just keep it plugged overnight(or till I unplug) and the charge will never exceed my set limit.
I think I am good now

Even better: if you generally leave at a certain time in the mornings you can set up "preconditioning" times so that the car can heat up in the winter or cool down in the summer - using "shore" power through the charger rather than drawing power from the battery

 

[kkgg]

Even better: if you generally leave at a certain time in the mornings you can set up "preconditioning" times so that the car can heat up in the winter or cool down in the summer - using "shore" power through the charger rather than drawing power from the battery

Oh yes, that is "even better"

 

[Motomax]

I'd be interested to seeing a comparison to any other similar(?) battery and it's daily charge schedule.

My laptop is plugged in and the battery is at 100%, 100% of the time. My cellphone on the other hand charges to 100% every night and discharges to 30%, 25% during the day.

How do these behaviors relate to the EV battery regimen?

It’s a lithium ion issue so they all have the same problem.
If you’ve had your laptop plugged in for a very long time I can guarantee that your battery is shot or will be very soon. Ive also destroyed a laptop battery by storing it at 100% as well.
You shouldn’t use your phone bellow 20% either as that will increase the damage, and if your phone has a delay charge feature use it. iPhones have the option of not fully charging until the time you usually unplug it in the morning.
Follow the same rules with the EV, except do leave it plugged in. Just set max charge to 80-90%

 

[Thunderbirdsoundsbetter]

I charge my car to 100% every day. I do travel 150-250 miles a day so theres that.

but even if I didn’t travel that much a day, I don’t see a reason not to charge it to 100%. I don’t think anyone who has this car will keep their car beyond the battery warranty. I also don’t see a significant drop in the battery capacity yet and I have 19k miles so far. The lowest I got down to was 8% and the car automatically started to turn off the ac and other things which was weird.

I think that tech will get better as times goes by and won’t need to worry about battery conditions as much. There’s probably a lot of software bedded to prevent any damage anyways. Just my 2cents.

 

[bp99]

but even if I didn’t travel that much a day, I don’t see a reason not to charge it to 100%. I don’t think anyone who has this car will keep their car beyond the battery warranty.

Those not planning on keeping it that long, would probably still prefer having higher resale value. If the Mach E develops a reputation for needing an expensive battery replacement after eight years, we'll all see much greater depreciation.

How well owners adhere to recommendations will likely impact future buffer reserves on newer cars. I prefer knowing that I should keep it under 90% most of the time and having access to more reserve when needed. If most people frequently top off to 100% and long term battery life becomes an issue, I could see Ford and other manufacturers setting 100% to the optimal charge level leaving no option for drivers to have additional buffer for busy days or trips. As technology improves, having a usable range of 600 miles, I'd likely be satisfied with not having an extra buffer available. At current ~300 mile range, I want the option.

 

[Thunderbirdsoundsbetter]

Those not planning on keeping it that long, would probably still prefer having higher resale value. If the Mach E develops a reputation for needing an expensive battery replacement after eight years, we'll all see much greater depreciation.

How well owners adhere to recommendations will likely impact future buffer reserves on newer cars. I prefer knowing that I should keep it under 90% most of the time and having access to more reserve when needed. If most people frequently top off to 100% and long term battery life becomes an issue, I could see Ford and other manufacturers setting 100% to the optimal charge level leaving no option for drivers to have additional buffer for busy days or trips. As technology improves, having a usable range of 600 miles, I'd likely be satisfied with not having an extra buffer available. At current ~300 mile range, I want the option.

I don’t see how it’s going to affect resale value as every battery change is expensive. It doesn’t stop Tesla with their whole battery change. The battery is gonna degrade and I think people understand that already.

everyone that asked me about range usually never drives more than 50 or so miles a day so. People that actually drive over 200 miles already usually have everything planned out.

 

[timbop]

I don’t see how it’s going to affect resale value as every battery change is expensive. It doesn’t stop Tesla with their whole battery change. The battery is gonna degrade and I think people understand that already.

everyone that asked me about range usually never drives more than 50 or so miles a day so. People that actually drive over 200 miles already usually have everything planned out.

Those who do not drive as much as you have no need to charge to 100%; they can charge to 80% and still return home with 50%. In your case you drive enough miles that going to 100% might be necessary, but that does not change the fact that you are taxing your battery and you will begin to see battery degradation over time. We all will eventually, but you will see a more pronounced degradation than you would have had you charged less - that is just a fact of how Li-ion batteries work. Because Ford has a bigger buffer than many cars it will take longer for you to see the effects, but that doesn't mena they aren't happening. This is not my opinion but the result of long term studies, which is why Ford recommends in the manual to charge to 90% instead of 100%. And FYI, Tesla ALSO recommends only charging to 90% except before long trips.

https://www.geotab.com/blog/ev-battery-health/

 

[SnBGC]

It’s a lithium ion issue so they all have the same problem.
If you’ve had your laptop plugged in for a very long time I can guarantee that your battery is shot or will be very soon. Ive also destroyed a laptop battery by storing it at 100% as well.
You shouldn’t use your phone bellow 20% either as that will increase the damage, and if your phone has a delay charge feature use it. iPhones have the option of not fully charging until the time you usually unplug it in the morning.
Follow the same rules with the EV, except do leave it plugged in. Just set max charge to 80-90%

My laptop has been plugged in every day for just about 2 years now. It is plugged into a docking station every work day and unplugged when I take it home with me every night and weekends.

I am on vacation this week so I unplugged it on Friday and have used it every day since for about an hour each time. Haven't charged yet and it says there is 45% remaining.

Am a little surprised actually. I was expecting to get 30 min max and then it would die but so far it has been hanging in there. I think laptop makers are learning too....

 

[SeaKayaker4Life]

I'd be interested to seeing a comparison to any other similar(?) battery and it's daily charge schedule.

My iPhone 7 is four years old, and after charging to 100% every night Apple considers it “significantly degraded” with only 74% of original capacity.

If that occurred in our car:

1. The SR would have a range of 156 miles after 4 years.
2. Ford would be replacing the battery pack in every single car.
3. The resale value once the battery is out of warranty would be zero.

 

[dbsb3233]

80% is for a DC fast charger.

That's irrelevant in the Mach-E, since it automatically slows DCFC charging to Level 2 power when it hits 80%.

 

[MachE_DK]

From the manual:

It's interesting. I just got my Mach E on the 21st of December (in Denmark), and in my manual it does not state any specific recommended max charing %. It just says (translated from Danish): "the impact on the battery can be reduced by setting the max charging level to less than 100% for daily use". And that could be everything from 0% to 99%.
But I guess 90% sounds fine for me, but it is funny that no one said aything to me about it: Not the dealer and not the manual. And not everyone with a Mach E will be reading forums all the time

 

[SnBGC]

It's interesting. I just got my Mach E on the 21st of December (in Denmark), and in my manual it does not state any specific recommended max charing %. It just says (translated from Danish): "the impact on the battery can be reduced by setting the max charging level to less than 100% for daily use". And that could be everything from 0% to 99%.
But I guess 90% sounds fine for me, but it is funny that no one said aything to me about it: Not the dealer and not the manual. And not everyone with a Mach E will be reading forums all the time

That is because it really doesn't matter for real world use. Early on, the guidance from Ford was to charge as you see fit and don't worry about it. But if people want a number....then 90% is as good as any. The buffer on this car is large enough that charging to 100% displayed is still totally fine. Then many years later, when degradation has consumed that upper limit buffer it still will be fine because 100% is still less than the actual capacity.

When I sold my previous BEV.......there wasn't one question, concern, analysis or condition check of the HVB. It was in great shape with same usable capacity as when new but that didn't affect the price one penny. They checked the condition of the tires, the body work and the interior but nothing was done to measure or check the health of the battery pack.

When it comes time to sell or trade in my MME.....as long as the car is in good condition then someone will buy it. The single most important factor that will affect resale value is the miles on the odometer. Same as an ICE vehicle.

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