this post was submitted on 20 Nov 2023
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This Southern California solar farm is using retired EV batteries for storing the power and then send to the grid when needed. This way the retired batteries can extend their usefulness for several... (grist.org)
submitted 2 years ago by L4s@lemmy.world to c/technology@lemmy.world
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This Southern California solar farm is using retired EV batteries for storing the power and then send to the grid when needed. This way the retired batteries can extend their usefulness for several...::A Southern California company is showing how repurposing EV batteries for stationary storage can extend their usefulness for several years.

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[–] Squizzy@lemmy.world 5 points 2 years ago (3 children)

This flies in the face of everything I thought I knew about charging my phone & laptop

[–] Jayemecee@lemmy.dbzer0.com 13 points 2 years ago* (last edited 2 years ago)

Yea, back in the day, when first phones and laptops were coming out, the tech was different, and was better to fully discharge/charge the battery. Nowadays it's the opposite, but the mith still survives

An easy analogy for batteries nowadays is to see them as an elastic completely relaxed at 50%. At 0% or 100% the elastic would be fully stretched. You want to avoid that to maximize its life

[–] TammyTobacco@lemmy.ml 2 points 2 years ago (1 children)

The old rules applied to nickel batteries or whatever the last gen was called.

[–] squaresinger@feddit.de 2 points 2 years ago

NiCd was the one with the bad memory effect that required full charging cycles. They where also really toxic which is why they are illegal in many countries now.

NiMh hardly had any memory effect left, but would degrade comparatively quickly.

Li-Ion/Li-Po is what we currently have. They don't like to be full or empty for long times and like shallow charging cycles.

[–] flawedFraction@lemmy.world 2 points 2 years ago

If you're interested in more technical details on the topic, this site has tons of info.