6% Battery Degradation after 3 years, 35k miles

[TRP]

I'd be curious what mine is, 84000 miles, 21 ER AWD.

What is the minimum equipment I need in order to check it without spending big $$$?

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[Trick.Mach-E]

According to the Car Scanner app, my '21 Select, RWD, Std Battery shows 6% degradation after 39 months and 35k miles. This was checked after an 80% charge and an ambient temp of 68 deg. The GOM used to show 200 miles on an 80% charge but now shows 190 (which is down about 6%). Sound about right?

38 months and a little over 39k and we are at 91.5% SOH. It could be better but to be honest I haven't planned for long term battery life. I let the battery run down to the 20% range then charge to 100%. We use faster chargers a lot as well. The only bad habit I didn't embrace was leaving the battery charged at 100% for long periods. These days I charge to 80% a few times a week now.

 

[Chainspell]

I'd be curious what mine is, 84000 miles, 21 ER AWD.

What is the minimum equipment I need in order to check it without spending big $$$?

Looks like your mileage is tied with Teslaeata's. You don't have to spend much at all. You need a OBDII bluetooth adapter (~$30) and the free "Car Scanner" app.

 

[ocdxfv]

This is the one I have. Bought it in 2018, seems to work fine.

https://www.amazon.com/gp/product/B00QJRYMFC/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

[Teslaeata]

Looks like your mileage is tied with Teslaeata's. You don't have to spend much at all. You need a OBDII bluetooth adapter (~$30) and the free "Car Scanner" app.

Aye, mine’s an ER RWD carrying half a tonne of tools everywhere, not bad for a works van ?

I use the attached, it’s good but pricey, because I use it professionally.

In fact it’s more pricey because I keep leaving it plugged in all over the country and have had to replace it 4 times so far?

 

[Snakebitten]

After learning and participating in the infamous Nissan Leaf battery SOH saga, the Mach-E battery degradation is of little concern to me.

What I would be concerned with regardless of which make/model is the delta between the lowest cell voltage and the average cell voltage. A high SOH value isn't going to do me much good if a weak cell ruins the party.

 

[Teslaeata]

After learning and participating in the infamous Nissan Leaf battery SOH saga, the Mach-E battery degradation is of little concern to me.

What I would be concerned with regardless of which make/model is the delta between the lowest cell voltage and the average cell voltage. A high SOH value isn't going to do me much good if a weak cell ruins the party.

This is true!

How right you are.

To that end I also temper the news of reported SoH with an analysis of each and every cell in each and every module to se if there’s anything going wrong in any of the cells individually.

That requires professional diagnostic equipment, only I think.

 

[ocdxfv]

We still have the 2012 Leaf in our family (my son drives it). We're on the warranty replacement battery and he's lucky to get 50 miles on a charge. I used to go out every Saturday morning to check the battery health. Once we reached the magic number (I believe it was 69%) we qualified for a new battery, but had to wait 6 months to get it. The new one wasn't much better than the original, but it did keep the car alive for quite a few more years.

 

[Holy Driver]

5% degeneration in the first year is normal and expected.
After that it shouldn't degenerate much more.

And the perfect temperature to check the SOH is 20°C and 100% charged battery.

 

[TRP]

Looks like your mileage is tied with Teslaeata's. You don't have to spend much at all. You need a OBDII bluetooth adapter (~$30) and the free "Car Scanner" app.

Which app do you suggest..........I see several free ones?

 

[ocdxfv]

Which app do you suggest..........I see several free ones?

This is what I use.

 

[PianoDan0]

In my 2021 Premium ER, 30k miles I'm at 89.5% SOH. I only DC fast charged a handful of times and keep it within 40-85% charge. I bought it used, so no idea what the previous owner's charging habits were.

 

[Chainspell]

Which app do you suggest..........I see several free ones?

The one that Matt posted. It's literally called "Car Scanner" ELM OBD2. The developer on Apple Store is Stanislav Svistunov.

 

[PianoDan0]

In my 2021 Premium ER, 30k miles I'm at 89.5% SOH. I only DC fast charged a handful of times and keep it within 40-85% charge. I bought it used, so no idea what the previous owner's charging habits were.

Oof, just took my car in for service this week and they said 2 of the HVB cells need replacing so that may explain my 89.5% SOH! They said battery modules are on backorder, so could be a while... This is annoying, but on one hand I'm getting some new cells that may extend the life of the battery a bit, I guess?

 

[Teslaeata]

Oof, just took my car in for service this week and they said 2 of the HVB cells need replacing so that may explain my 89.5% SOH! They said battery modules are on backorder, so could be a while... This is annoying, but on one hand I'm getting some new cells that may extend the life of the battery a bit, I guess?

Really interesting! Keep us posted the effect on SoH the new modules have.

Assume you’re having 2 modules changed rather than 2 cells, didn’t think it was possible to change cells in the MME and when modules need changing they should be swapped in pairs is my understanding.

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