Effect of Battery on AWD Driving Performance

[JCHLi]

And don't forget charging a smaller battery takes less time then a big one, so me too I'm going with the SR AWD no need to spend thousands of dollars just for a few road trips a year.

I'm thinking that although it will take longer to fully charge the larger battery, the ER should theoretically charge faster to a point. Since the charge slows down as it gets closer to full.

Just a thought

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[JamieGeek]

I'm thinking that although it will take longer to fully charge the larger battery, the ER should theoretically charge faster to a point. Since the charge slows down as it gets closer to full.

Just a thought

It depends on which charger you're talking about:

• Level-1 or Level-2: These pretty much charge at a constant rate and thus take the same amount of time to put a kWh into a smaller battery as they do the larger battery. Thus the larger battery will take longer to "fill" it all the way up.
• DCFC: The ER battery will charge at a faster rate because there are more cells than the smaller battery (at least during the fastest part of the charge cycle)

 

[RyZt]

The original post was about whether $5000 ER upgrade gives enough extra power to justify it. But I see that follow up comments are also talking about other trade off of spending $5000 on ER.

I'd like to add one thing to the latter topic. The primary factor of battery degradation is number of full charge cycles. As a result, battery life is proportional to its capacity (assuming same chemistry and quality). If it takes 100k miles to reduce SR battery (68 kWh) capacity by 20% (the 20% number is picked arbitrarily), it would take 130k miles to do the same to ER battery (88 kWh). The difference would be even more significant if you compare how many miles it would take to bring the capacity down to any particular absolute value, say 50 kWh.

Of course, all this assumes that the battery will be the first major/expensive component in Mach E to require fix/replacement.

 

[timbop]

The original post was about whether $5000 ER upgrade gives enough extra power to justify it. But I see that follow up comments are also talking about other trade off of spending $5000 on ER.

I'd like to add one thing to the latter topic. The primary factor of battery degradation is number of full charge cycles. As a result, battery life is proportional to its capacity (assuming same chemistry and quality). If it takes 100k miles to reduce SR battery (68 kWh) capacity by 20% (the 20% number is picked arbitrarily), it would take 130k miles to do the same to ER battery (88 kWh). The difference would be even more significant if you compare how many miles it would take to bring the capacity down to any particular absolute value, say 50 kWh.

Of course, all this assumes that the battery will be the first major/expensive component in Mach E to require fix/replacement.

Yes, I definitely did the analysis on that for my 100mi/day commute. But, with only charging to 85% and not going below 10% with summer A/C and winter heat eating to efficiency I only got an extra day's trip in the spring in fall. It was a case of having a lot left over when I got home but not quite enough to go another day. Of course, those with different length commutes could see MUCH fewer cycles in a year

 

[ClaudeMach-E]

I'm thinking that although it will take longer to fully charge the larger battery, the ER should theoretically charge faster to a point. Since the charge slows down as it gets closer to full.

Just a thought

It's a possibility

 

[Mathington]

I currently have a reservation for a Premium AWD Extended Range MME. I'm strongly considering dropping to the Standard Range. $5k seems like a lot for a modest bump in range, that would only be helpful to me ~8 times a year at most.

I've never had a BEV, and only driven one once. I've attempted to do my research, but still can't seem to get a clear understanding of the performance differences with the two different batteries. Is the Extended Range going to have noticeably better acceleration?

Thanks for any info. This forum has been a great resource.

It’s more than the $5,000 difference if you are financing. In Canada, the premium standard range could be financed at 0.99% where as the premium extended range was 3.99%, when you add the extra interest on the total cost of the vehicle, it makes the extended range significantly more expensive. I really wanted the premium AWD but couldn’t bring myself to pay the extra $5,000 plus the 4x higher interest rate.
if the interstates are the same where you live then I would go extended for more power, longer range and better resale.

 

[4TangledKites]

It’s more than the $5,000 difference if you are financing. In Canada, the premium standard range could be financed at 0.99% where as the premium extended range was 3.99%, when you add the extra interest on the total cost of the vehicle, it makes the extended range significantly more expensive. I really wanted the premium AWD but couldn’t bring myself to pay the extra $5,000 plus the 4x higher interest rate.
if the interstates are the same where you live then I would go extended for more power, longer range and better resale.

Wow old thread being revised! FYI - I stuck with the extended battery, and I'm very glad I did for these reasons:

1) The $5k is a one time spend, and I would have had buyers remorse either way. I got Ford's 0.9%/48mo financing so that didn't factor in.
2) Range in the winter. I just got mine in March, so we'll see how it does this coming winter. I have a 160mile trip I want to be able to do without charging. Based on everything I've read and learned on these forums, the lower range option may not have worked out in the colder months.
3) Range on road trips. Not so much worried about having to stop to charge, but more so the lack of good EA coverage (and backup options). The extra range I can avoid charging, skip charges, and making it to "backup" options is all the more easy.

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