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It's just LiFePO4 though (which laptop batteries have been using for many years now), still not solid-state. Still a liquid electrolyte susceptible to dendrite
by ranger_danger 1y ago
It's just LiFePO4 though (which laptop batteries have been using for many years now), still not solid-state. Still a liquid electrolyte susceptible to dendrite formation, thermal runaway/self-ignition, ejecting flammable gases and hot sparks, still capable of contributing to explosions.
- igor47 1y agoLifepo4 is much much less likely to runway self ignite than li ion batteries, at the cost of lower energy density. I'm surprised to hear of laptops with lifepo4 -- what are some examples?
- Rediscover 1y agoOLPC XO1 and the MNT Reform both use LiFePO4.
- hadlock 1y agoI think you're confusing li-poly and lithium ion, with lifepo4. There's no shortage of videos on youtube of people cutting open lifepo4 with kitchen knives, band saws, and hammers without ill effect.
- ranger_danger 1y agoFalse equivalence IMO... cutting into an unconnected battery is not how battery fires typically start, not a typical act people perform with their batteries, nor really related to self-ignition, dendrites or thermal runaway at all.
- hadlock 1y agoIf you want to look at it from another angle, you often can't get insurance for a boat with "regular" lithium house batteries, however most/all insurance companies have a carve-out for lifepo4 as it's recognized industry-wide as one of the safest battery technologies available under a wide variety of conditions.
- bahmboo 1y agoYou are incorrect. Laptop batteries are overwhelmingly NMC or similar chemistries. I don't know of any LiFePo4 laptops. Also LiFePo4 is extremely safe. So like another poster suggests I think you've got your chemistries mixed up.
- ranger_danger 1y ago> You are incorrect How so? > Laptop batteries are overwhelmingly NMC or similar chemistries Yep, I was not debating that. I was not trying to imply any particular percentage of laptop batteries are LiFePo4, just that they have existed at all in that field for years now. There are several laptop manufacturers that are regularly using lifepo4 now. > LiFePo4 is extremely safe I would say it is safer than li-ion but still not near as safe as an all-solid-state battery.