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Battery degradation: time vs recharge cycles

Battery degradation: time vs recharge cycles

In my case I drive 25,000 miles/year.

That means in 5 years I would reach the 120,000 miles battery warranty threshold.

Case 1:Lets say someone drives 120,000 in 10 years.
Case 2:I drive 120,000 in 5 years.

If that was an ICE car, the engines and parts would be warned out pretty much the same way.

I am wondering how that level of usage will impact EV batteries. I am sure the electric motor and breaks would be impacted same way in either case.

minervo.florida | 24 september 2017

Elon wants Tesla's drivetrain to go about 1 million miles, almost no maint.

The 18650's are having minimal loss of charge, at 500,000 miles Tesla had about 15% degradation, they are better now, maybe 90%.

Their battery expert has a formula that will do it all and have 95%.

Nothing to be concerned about.

Carl Thompson | 24 september 2017

@minervo.florida:
"The 18650's are having minimal loss of charge, at 500,000 ..."

I call BS. Please provide a source for this.

Carl

ReD eXiLe ms us | 24 september 2017

minervo.florida: Do not bother. The [IGNORED] has already participated in numerous threads where the required evidence has been provided. Like most trolls, he prefers to act as if it does not exist. [FOUL] that guy.

ReD eXiLe ms us | 24 september 2017

Ron_nasc: I'm surprised you haven't seen the numerous reports posted here and on YouTube of Taxi/Livery services both in the U.S. and Europe that use Tesla vehicles acquired in 2015 that have already surpassed 200,000 miles of driving with minimal degradation to range in only two years of operation. That is effectively four tines your own use case. Don't worry about it.

Frank99 | 24 september 2017

I'm on CT's side on this one - he was calling BS on minervo stating as a fact that there are cars with 500,000 miles on a battery showing 15% degradation, and that there are newer batteries with 500,000 miles on them showing less degradation.

There may be predicted data for 500,000 miles, but I haven't seen anything suggesting there's a customer car with 500,000 miles, much less one with the orginal battery.

carlk | 24 september 2017

You don't think Tesla has extensively tested its batteries and have good data to simulate 500,000 or 1 million miles or even more in real world uses?

Frank99 | 24 september 2017

Oh, I fully beileve they have - but I don't believe you, or anyone outside Tesla, knows the battery degradation they've seen at 500,000 miles.

Carl Thompson | 24 september 2017

+1 @Frank99

Yes. This is total BS:

@minervo.florida:
"The 18650's are having minimal loss of charge, at 500,000 miles Tesla had about 15% degradation, they are better now, maybe 90%."

Teslas fare reasonably well in the battery department (compared to Leafs) but any claims about batteries at 550k miles is nonsense. There are a few really high mileage Teslas that we've heard about (nowhere near 500k miles) but the highest ones have had their batteries replaced or repaired.

Carl

SamO | 24 september 2017

~5% at 85,000 miles. Real world.

Frank99 | 24 september 2017

Very much in keeping with the accepted wisdom, SamO:
https://c1cleantechnicacom-wpengine.netdna-ssl.com/files/2017/05/tesla_n...