GRA
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Joined: Mon Sep 19, 2011 1:49 pm
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BMW Batteries Have 15-Year Life In EVs

Sat Jan 06, 2018 4:15 pm

Via IEVS: https://insideevs.com/bmw-batteries-have-15-year-life-in-cars/

BMW’s head of battery development, Andreas Raith, interviewed by the CarAdvice, says that lithium-ion batteries in all-electric and plug-in hybrid cars are designed for “15 years and beyond.”

There is nothing to worry about as BMW took a conservative approach to achieve 70% of battery capacity after 15 years. The field data collected so far indicates that results are better than envisioned.

Life-expectancy for BEVs and PHEVs is on par with ICE cars.

    To make batteries durable, BMW utilized thermal management system with liquid cooling.

Andreas Raith said:

    “It’s not a marketing statement, those batteries are designed to last as long as the vehicle,”

    “We can prove that with the field data that we see today coming in from our existing fleet of plug-in hybrids… it’s fair to say and I think it’s a statement for the entire industry and community, everyone is so concerned about [battery] life time and the engineering community as a whole takes a very conservative approach to preserving those batteries.”

    “BMW specification in case of durability is no different between combustion engines or battery driven vehicles. . . .”

Now, will they warranty them for that?
Guy [I have lots of experience designing/selling off-grid AE systems, some using EVs but don't own one. Local trips are by foot, bike and/or rapid transit].

The 'best' is the enemy of 'good enough'. Copper shot, not Silver bullets.

Jedlacks
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Location: Kennesaw, GA

Re: BMW Batteries Have 15-Year Life In EVs

Sat Jan 06, 2018 7:21 pm

I seriously doubt the current version of i3 cars, BEV or REX, will last that long.
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cwerdna
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Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: BMW Batteries Have 15-Year Life In EVs

Sat Jan 06, 2018 7:26 pm

Jedlacks wrote:I seriously doubt the current version of i3 cars, BEV or REX, will last that long.

I agree, esp. the unreliable REx.

I suspect, the current or next owners of the REx will be so fed up w/its lack of reliability that they'll junk the car before 15 years once something expensive that's out of warranty fails. And, if a BEV or REx version hits motor mount breakage outside of warranty... The resulting repairs will be way too costly to be worth fixing. I've seen the receipts of the aftermath from that.

I've seen a few cases on the i3 where some other failure forces the dealer to replace the entire battery pack.

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