this post was submitted on 19 Sep 2024
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cross-posted from: https://lemm.ee/post/42738519

all 19 comments
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[–] [email protected] 36 points 6 months ago (3 children)

I really like the safety aspect of this, but 72% capacity after 300 cycles seems low. What's a use case scenario where this is preferable over lipo batteries?

[–] [email protected] 45 points 6 months ago

Much more stable chemistry. In stationary applications, like UPS systems and off grid electrical systems, lead acid is still the standard, due to having stable chemistry, very unlikely to catch fire, and a cost to capacity ratio that is still very good.

The degradation seems pretty bad, but if it's stable from 300 cycles onwards, you could take 75% as the actual capacity of the battery.

[–] [email protected] 13 points 6 months ago (1 children)

Boats, planes, drones, phones, bikes... Anywhere that you can maximize storage cell capacity in odd shaped volumes and spaces/designs. It's great.

[–] [email protected] 20 points 6 months ago (2 children)
[–] [email protected] 7 points 6 months ago* (last edited 6 months ago)

Why do you think they’re called D batteries? 😏

[–] [email protected] 1 points 6 months ago
[–] [email protected] 2 points 6 months ago

Having looked at comparative data, it's not really out of the norm...

[–] [email protected] 17 points 6 months ago (2 children)

After 300 cycles, a lithium carbide iron disulfide pouch cell retained 72.0% capacity

Put that on a phone and the battery will degrade almost 30% in one year... seems a lot tbh.

[–] [email protected] 8 points 6 months ago

But depending on cost, in my hopeful optimistic universe, that could mean bringing back replaceable batteries.

[–] [email protected] 12 points 6 months ago

it is so interesting to learn just how far behind articles like this are

[–] [email protected] 8 points 6 months ago

I bet if you cut it vertically the lights will go out.

[–] [email protected] 4 points 6 months ago

Big if true

[–] [email protected] 4 points 6 months ago

But does it make a boom when Mossad needs it?