#lifepo4 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #lifepo4, aggregated by home.social.
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BLUETTI FridgePower keeps your refrigerator running when the power goes out
https://fed.brid.gy/r/https://nerds.xyz/2026/04/bluetti-fridgepower-refrigerator-backup/
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People recommending you manually use a CC/CV power supply are not helping you 😉
Good chargers will let you set what *type* of battery it is, and will correctly charge all major types. I've got a four-cell (four independent charging circuits) that will happily charge NiCad, Nickel Metal Hydride, LiFePO4, Lithium-ion polymer, and a few others. It mostly autodetects the correct type.
They're not stupidly expensive. The model I have is currently $37 Canadian from Amazon:
https://www.amazon.ca/Battery-Charger-Digital-Display-Universal/dp/B09FHSYLTG -
My #BMS #PCBs arrived from @aislerhq and they look nice. I designed it because I couldn't find 3S BMS for #LiFePO4 cells and didn't like the voltage thresholds of the cheap #LiIon ones.
It uses the #BQ77915 chip from #TexasInstruments. Size is 63x50mm.
While fetching all components according to the BOM, I noticed the #diode had the #footprint SOT-323 assigned. I only have SOT-23 ones :blobcatgoogly:
I'm glad that I can still make it fit, and the third leg isn't used at all (it's a single diode).
Can't wait to find some time to finish soldering a few and try them out.
It supports 3S up to 5S, and I added #silkscreen part to mark how it's configured.
The back has detailed instructions, so I don't forget them.