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A comment on Tesla's giant battery saved $40M during its first year, report says. Parent comment

Re:Tesla's giant battery saved $40M during its first year, r... by danans on Thursday December 06, 2018 @12:47PM (#18620292)
EV batteries can be repurposed for small-scale grid storage applications, and therefore can have a second life for many years before they are finally broken down to raw ingredients for recycling:

https://www.bloomberg.com/news/features/2018-06-27/where-3-m...

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Re:Tesla's giant battery saved $40M during its first year, r... by Scoundreller on Thursday December 06, 2018 @01:27PM (#18620664)
Do aged lithium batteries lose charge efficiency, discharge efficiency or capacity?

Each loss would encourage different kinds of secondary uses.

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Re:Tesla's giant battery saved $40M during its first year, r... by geon on Friday December 07, 2018 @02:14AM (#18625715)
Yes. Eventually, Li-Ion batteries will "puff up" due to chemical degradation and may even spontaneously catch fire.

https://www.reddit.com/r/askscience/comments/55q7py/why_do_l...

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Re:Tesla's giant battery saved $40M during its first year, r... by Pete_D on Friday December 07, 2018 @02:14PM (#18630616)
This always makes me nervous. If I have some old laptops lying around, how worried should I be about them exploding? Does it only apply if they're in use?
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Re:Tesla's giant battery saved $40M during its first year, r... by danans on Thursday December 06, 2018 @01:59PM (#18620955)
I believe they experience all of those. But yes, there are many secondary uses, especially in situations where high energy density isn't required.

After the last economically viable use for electricity storage, however, there has to be an economic incentive to actually recycle the raw materials. Presumably this is when value of the raw materials exceeds the cost of their reclamation.

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Re:Tesla's giant battery saved $40M during its first year, r... by Sohcahtoa82 on Thursday December 06, 2018 @08:05PM (#18624212)
>> Do aged lithium batteries lose charge efficiency, discharge efficiency or capacity?

> I believe they experience all of those.

Hmm...would that explain the CPU performance loss of an aging cell phone battery? Lower discharge efficiency = less power available for the CPU = CPU throttles itself to lower power usage?

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Re:Tesla's giant battery saved $40M during its first year, r... by geon on Friday December 07, 2018 @02:10AM (#18625705)
That is exactly what happened, yes. Without the throttling, the battery can't deliver peak power, and the device crashes.
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