Why has my battery not lasted?

[pagesix1536]

In the future, I wouldn't consider purchasing an electric car that doesn't have a temperature-controlled battery management system...

Eh, its not all bad. For the right price a Leaf isn't a bad option (maybe just stay clear of the japan-built 2011-2012's). I have a 2015 with 11/12 bars still and 41k miles on it. That pretty good considering no active cooling on the pack and driving in hot Atlanta summers.

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[Crissa]

My Zero has no temperature management, merely cut-offs. And it's eight years old with basically no degradation.

It's partly luck, partly design, and partly pattern of use.

The battery is a consumable, it will eventually be consumed. Even the terrible mileage of the Soul and some Leafs they still got way more miles out of that battery pack than the equivalent weight/volume/cost/carbon of gasoline and the pack is recyclable.

-Crissa

 

[CyberGus]

A contributing factor in battery degradation is Depth of Discharge (DoD). Using more than about 50% of the battery capacity in a charge cycle will accelerate range loss.

This becomes more pronounced with smaller packs. Larger packs will suffer less, but then you're carrying battery capacity that is seldom used.

Engineering is about trade-offs.

 

[Crissa]

Chemistry changes the impact of depth of discharge, but only so much. The new LFP packs are much better about it, and don't care about being at peak voltage as much, either.

-Crissa

 

[JeffnReno]

J. B. Straubel

 

[charliemagpie]

I wonder how much a KWh will be in 10 years.

Probably less than $3000 to swap your battery pack for something with twice+ range, and a 100-year lifespan.

 

[Crissa]

Thanks for this interesting information!

My favorite part of this forum! I'm always learning something.

-Crissa

 

[Ogre]

I wonder how much a KWh will be in 10 years.

Probably less than $3000 to swap your battery pack for something with twice+ range, and a 100-year lifespan.

There is weirdness around this.

The 2170 non-structural packs in the Model 3 and current Model Ys will be uncommon and might not be produced new. Will Tesla continue making retrofit packs? Even if they do, most of their cells will be 4680 or something else.

Tesla still makes Roadster battery packs, but in very small volume and hand made, plus they are extremely expensive. Worth it to keep a now classic/ collectors car running.

I think the 4680/ structural packs are going to be around for some time though, so our Cybertrucks should have reasonable pricing for replacement packs.

 

[TomGriff]

2015 MS 70D with ~92K miles has degraded about 6% with no visible degradation since I bought it last year with ~75K miles. 2017 Chevy Bolt has not degraded enough to notice (harder to tell because it doesn't have the fixed miles that Tesla has). Bought it with ~23k miles about 1.5 years ago and has around ~35K miles. Of course, it will be getting a new, larger battery through the recall with a new 8 year warranty.

There is a chart at the bottom that compares degradation over time - https://www.geotab.com/blog/ev-battery-health/

 

[ldjessee]

My Leaf dropped to 11/12 last year. I think from the bad charging cycle because we basically stopped driving for over a year. I think it spent too much time at low and high states of charge...

 

[charliemagpie]

There is weirdness around this.

The 2170 non-structural packs in the Model 3 and current Model Ys will be uncommon and might not be produced new. Will Tesla continue making retrofit packs? Even if they do, most of their cells will be 4680 or something else.

Tesla still makes Roadster battery packs, but in very small volume and hand made, plus they are extremely expensive. Worth it to keep a now classic/ collectors car running.

I think the 4680/ structural packs are going to be around for some time though, so our Cybertrucks should have reasonable pricing for replacement packs.

With millions of Tesla cars currently on the road, If not Tesla, someone will have a business case to retrofit.

Someone will train buy a robot to build them, lol... cheap as chips !!!

 

[Crissa]

With millions of Tesla cars currently on the road, If not Tesla, someone will have a business case to retrofit.

Someone will train buy a robot to build them, lol... cheap as chips !!!

Exactly.

There are no less than three companies in different English-speaking countries making replacement packs for Leafs, and Tesla sold more Model 3 last year than the number of Leafs that exist outside Japan.

-Crissa

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