Unplug after charging?

ChasingCoral

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The MMe is currently not capable of 100%. Only ~88kWh usable (of actual 98.8kWh) at 100% which equates to ~89% of actual total.
Theoretically* 1P regenerative braking should be available at 100%. Not so if you actually charged to 100%. There is nowhere to put the energy when 100% charged. You have to use some energy first in order to put the regenerated energy into the batteries.
*I do not have my MMe. Therefore, unable to test 1P regenerative braking at "100%" charge.
However, Ford clearly recommends only charging to 90% on a routine basis when using L1/L2 (80% for DCFC). I recommend you set your home charging to 90% or lower. You can override that whenever you need to.
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DK922

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Definitely not in the manual..
 

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The MMe is currently not capable of 100%. Only ~88kWh usable (of actual 98.8kWh) at 100% which equates to ~89% of actual total.
Theoretically* 1P regenerative braking should be available at 100%. Not so if you actually charged to 100%. There is nowhere to put the energy when 100% charged. You have to use some energy first in order to put the regenerated energy into the batteries.
*I do not have my MMe. Therefore, unable to test 1P regenerative braking at "100%" charge.
I don’t think we know the actual values yet, but on EVs most of the buffer is held on the low end to make sure there is enough current capacity at low soc to still drive the car. Some is reserved at the top for regen and degradation, but not as much.
I think we will see numbers like 8% - 97% being the actual range of the battery available to you. Hence the request to not charge above 90%.
 

ChasingCoral

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I don’t think we know the actual values yet, but on EVs most of the buffer is held on the low end to make sure there is enough current capacity at low soc to still drive the car. Some is reserved at the top for regen and degradation, but not as much.
I think we will see numbers like 8% - 97% being the actual range of the battery available to you. Hence the request to not charge above 90%.
It's been tested. Regeneration works fine at 100% charge. I'm not sure I'd want to start at 100% from the top of a mountain but under normal conditions the buffer over 100% provides plenty of regeneration capacity.
 

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However, Ford clearly recommends only charging to 90% on a routine basis when using L1/L2 (80% for DCFC). I recommend you set your home charging to 90% or lower. You can override that whenever you need to.
I've been reading the manual in preparation of picking up my car any day now. I've seen many people post similar statements on this forum, but cannot find the 90% recommendation in the manual despite reading the entire charging section.

In fact, the only reason Ford recommends stopping at 80% when using DCFC is to save money and time as charging slows down beyond 80%.
Ford Mustang Mach-E Unplug after charging? Screenshot_20210604-114340


It's possible I'm reading too fast to find the 90% recommendation. If so, can you kindly site the page number or online location of the recommendation?

Thanks!
 


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I've been reading the manual in preparation of picking up my car any day now. I've seen many people post similar statements on this forum, but cannot find the 90% recommendation in the manual despite reading the entire charging section.

In fact, the only reason Ford recommends stopping at 80% when using DCFC is to save money and time as charging slows down beyond 80%.
Ford Mustang Mach-E Unplug after charging? Screenshot_20210604-114340


It's possible I'm reading too fast to find the 90% recommendation. If so, can you kindly site the page number or online location of the recommendation?

Thanks!
Right here, page 149:
Ford Mustang Mach-E Unplug after charging? 1622826546740
 

Eosin

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Right here, page 149:
1622826546740.png
Thanks... I'll be setting up a maximum charge to 90% as soon as I get my car.

On a similar topic, that paragraph recommends letting the car cool first. Is there an easy way to set up a delay without programming a specific start time. For instance, can I tell the car to wait 20 minutes before charging when I plug it in at home?

My electricity rates don't fluctuate based on peak usage times like in some places, so I'd rather it just charge any time of day when plugged in after a brief cooling period. As opposed to having it charge every night between specific times.

Also, I alternate between working days and nights every few days, so it would not be possible to charge on a set schedule.
 

ChasingCoral

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Thanks... I'll be setting up a maximum charge to 90% as soon as I get my car.

On a similar topic, that paragraph recommends letting the car cool first. Is there an easy way to set up a delay without programming a specific start time. For instance, can I tell the car to wait 20 minutes before charging when I plug it in at home?

My electricity rates don't fluctuate based on peak usage times like in some places, so I'd rather it just charge any time of day when plugged in after a brief cooling period. As opposed to having it charge every night between specific times.

Also, I alternate between working days and nights every few days, so it would not be possible to charge on a set schedule.
There's no easy way to set up a delay and I don't have TOD electrical rates either. My Leaf can be programmed to start charging at a particular time or to end charging at a particular time. We set it up to end by 0800. Unfortunately the Mach E only has start times but you can set up two periods per day. I wish Ford had given us more options for this.
 

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What
There's no easy way to set up a delay and I don't have TOD electrical rates either. My Leaf can be programmed to start charging at a particular time or to end charging at a particular time. We set it up to end by 0800. Unfortunately the Mach E only has start times but you can set up two periods per day. I wish Ford had given us more options for this.
It has end times too.
But both start and end have to be set.
I don't have the tou plan but have my set to the times in the tou available for me. I figure that's best for grid and it's cooler at night.
Ford Mustang Mach-E Unplug after charging? Screenshot_20210604-152155
 

BMT1071

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What

It has end times too.
But both start and end have to be set.
I don't have the tou plan but have my set to the times in the tou available for me. I figure that's best for grid and it's cooler at night.
Ford Mustang Mach-E Unplug after charging? Screenshot_20210604-152155
Do you have APS or SRP?
 

zhackwyatt

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Do you have APS or SRP?
SRP. I set my end time later than their TOU so I don't get messages about having to charge outside my preferred time due to the precondition settings. It's always charged before hand anyway.

I have solar and the tou plans don't make sense compared to my current netmetering.
 

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Thanks... I'll be setting up a maximum charge to 90% as soon as I get my car.

On a similar topic, that paragraph recommends letting the car cool first. Is there an easy way to set up a delay without programming a specific start time. For instance, can I tell the car to wait 20 minutes before charging when I plug it in at home?

My electricity rates don't fluctuate based on peak usage times like in some places, so I'd rather it just charge any time of day when plugged in after a brief cooling period. As opposed to having it charge every night between specific times.

Also, I alternate between working days and nights every few days, so it would not be possible to charge on a set schedule.
Some EVSE models have a delay feature. Siemens VersiCharge comes to mind. I am sure there are others.
If you set a charge schedule for when you are sleeping then the battery will cool down prior to that time. If ambient temps are so hot that your battery actually warms up while parked (such as my area), then the car will cool the battery as needed as long as you have it plugged in.
 

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So I'm leaving for a 10 day trip to Florida to visit my younger daughter and will take my ICE vehicle (Acura MDX which burns premium gas - ouch!) and will leave the Mach E plugged in and set to 90% max SOC in my garage. Is this the general consensus on this thread for leaving the car "stored" for short periods of time? I know if the storage is a long period of time (like over the winter) it is best to leave the batteries around 50% but this is not a long period of time. I'm hesitant to leave it plugged in though as we won't be home and it would be left unattended during the entire 10 day period. On the other hand, I'm somewhat concerned about the HV battery losing charge or the ability to charge the LV battery if I do unplug the EVSE from the car.

What is the consensus or is this just personal preference?
 

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Can you post a screenshot or page where this is in the manual? I can't find this and was looking for similar info. I know Tesla recommends leaving the car plugged in at all times for battery health so trying to figure out what Ford recommends for the MME
My Tesla is only plugged in when it is charging. It's 7 years now.

When charging completes the contactors open and the "wall" is no longer connected to the car. True for the Tesla and my 2013 Ford Fusion Energi. The Tesla will reconnect if the GOM drops by about 10 miles. The Energi never reconnects unless there is a start time set. I don't have the Mach-E yet so I don't know its characteristics.
 

ChasingCoral

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So I'm leaving for a 10 day trip to Florida to visit my younger daughter and will take my ICE vehicle (Acura MDX which burns premium gas - ouch!) and will leave the Mach E plugged in and set to 90% max SOC in my garage. Is this the general consensus on this thread for leaving the car "stored" for short periods of time? I know if the storage is a long period of time (like over the winter) it is best to leave the batteries around 50% but this is not a long period of time. I'm hesitant to leave it plugged in though as we won't be home and it would be left unattended during the entire 10 day period. On the other hand, I'm somewhat concerned about the HV battery losing charge or the ability to charge the LV battery if I do unplug the EVSE from the car.

What is the consensus or is this just personal preference?
If the battery is less than 90% (preferably around 50%) leave it at that level and don't charge it up. You can plug it in and charge it to 90% when you get back.

Of course, if it were me I'd be driving the Mach E to FL to avoid burning the gas. The built in navigation makes road trip charging a breeze and barely added time to our trip.
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