80% charge or 90% charge for daily use?

[DevSecOps]

Charge daily and charge from 5 miles remaining are not aligned, did I miss something?

If you read the study you'll see they drove 6 days a week and charged it 2x times each day. When the car got to 5 miles of remaining range they would charge again. So they basically did a 100 to 0 charge cycle each time.

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[kennethjk]

More data: So I had never checked on SOH - until today.

My battery is reported at 7.59 months old, but I know that is just the date that it was mounted in the car as that is the build date of the car in January (except for chips that I waited for almost 5 months after the car was built). I am sure the pack was assembled weeks before that.

I have driven 4278 miles in the last 3.75 months.

My reported SOH is 99.5%. If that data is accurate, that is a degradation rate of 0.79% per year, however, I am not sure how much of that relates to the first almost 4 months where the car was kept at a nearly full SOC in the hot Mexico climate. I will look at this in another 6 months or so and see what the degradation is then.

In 6.5 years (my other data point from an earlier post) that is projecting a 5.135% loss that is tracking much more like a 2014 Chevy Volt than an "average EV" (that saw an average loss of 11.1%). After 20 years if that tracks at the same rate of loss, I will still have 84% of my battery remaining.

I think the bottom line is just enjoy your car and drive it the way that makes you happy as I think the BMS and battery cooling design appears to be well designed. For me I love driving the car and also like to understand the tech. I know whatever happens this car will put a smile on my face and it exceed my needs for the next 2 decades (at least that is what my plan is).

My car was built 12/10/21 - delivered 3/16/22 and battery reads 8 months old as of 9/3/22

 

[Fixbear]

A little gold with the repair NPC will easily get your gear back to 100%.

But back on topic... How old is your car now? We can do the math and you don't even have to look.

Mines 23 months. Standard range

 

[mkhuffman]

Now I am getting surly. WTH is with my 96% SOH if some are still at 100%? I may need a warranty claim.

 

[kennethjk]

Now I am getting surly. WTH is with my 96% SOH if some are still at 100%? I may need a warranty claim.

Sometimes too much information is no good.

 

[JSeis]

FWIW I drive the same route every day, every week, every month at the same speed.

A year ago at 90% charge the most range I ever saw was 219 miles at 90% charge. A year later, the maximum range at 90% I’ve seen yet is 219 miles. AWD SR. I’m quite ok with that.

The one odd thing I’ve observed is that FordPass will often tell me that I’ve a range that’s 3 miles higher than when I get in the car and turn it on. So 217 might be 214 at start up. The other odd thing is that 100% might be 237-243 and that 100% charge won’t drop to 99% for maybe 5 miles. So there’s a lot of nuance on the analytics there. I don’t care as the car consistently performs very well. BTE, I usually get home with 40%-53% charge left (depending on weather). The worst mileage estimate I ever saw in the dead of winter was 137 miles at 90% (long 28-34 cold spell). That all being said my 28,000+ average of 3.7 Mi/KWh is fine by me.

While I’m religious about preconditioning in late fall and winter, not at all in summer as our nighttime temp is rarely under 58 F.

 

[mkhuffman]

Bah. 96%. I need a new battery.

 

[kennethjk]

Bah. 96%. I need a new battery.

Time to rethink your charging strategy, LOL

 

[mkhuffman]

Time to rethink your charging strategy, LOL

I obviously need to DCFC more, like my buddy Todd.

 

[kennethjk]

I obviously need to DCFC more, like my buddy Todd.

Based on this, Ford is now going to update their manual recommending DCFC to 100% at home and travel to help extend the battery life

 

[RickMachE]

My reported SOH is 99.5%. If that data is accurate, that is a degradation rate of 0.79% per year, however, I am not sure how much of that relates to the first almost 4 months where the car was kept at a nearly full SOC in the hot Mexico climate. I will look at this in another 6 months or so and see what the degradation is then.

The plant doesn't charge anywhere near 100%, just like they don't put a full tank of gas in ICE vehicles. Some get delivered vehicles with not a full charge because the dealer never charged it. It's around 50%.

 

[SigSauer]

We charge to 95% every Sunday night. Ready for the week of driving.

 

[daemonic3]

We charge to 95% every Sunday night. Ready for the week of driving.

As was written in the Bible

 

[jamelski]

Thank you all for the laugh on this.

I charge to 100 every day and don’t give a flying faq what you think.

but I’ll say this

if you have an ev for 10 years with the way technology changes

Your either cheap and /or stupid

drop I’m out

 

[ChuckA]

The plant doesn't charge anywhere near 100%, just like they don't put a full tank of gas in ICE vehicles. Some get delivered vehicles with not a full charge because the dealer never charged it. It's around 50%.

Or the dealer didn’t realize it takes 5 hours to go from 50% to 100% on their level 2 charger.

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