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#lifepo4

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I should not have cheaped out on the #lifepo4 battery management system and gotten one with Bluetooth for diagnostics instead.

Would have saved me quite a lot of time trying to figure out why it won't accept charge. Turns out that one of the cells got discharged below 2.8V and triggered the protection.

Once I knew this, it just took a couple of seconds of single-cell charging to get it above 2.8V and working again.

Replied in thread

@giggls @ulrichkelber Deren Volumen- und Gewichtseffizienz ist signifikant schlechter als #LiFePO4 und daher eignen die sich nur für großvolumige #USV|s.

Replied in thread

@krzym "als jede #Brennstoffzelle" ist fraglich, besonders wenn wir Energiedichte & Kapazität in kWh nehmen.

#Methanol speichert deutlich mehr Energie pro Gewicht & Volumen als Akkus, und nen Tank ist signifikant weniger Leergewicht als nen Akku...

-Ein #LiFePO4- Akku mit 500Ah bei 12V & 25kg Gewicht sind 240Wh/kg. Bei Methanol sind es > 2.000Wh/kg bzw. >1.500Wh/l 1.

Außerdem ist Methanol nicht nur billig sondern auch sicherer im Umgang, umweltfreundlicher im Brandfall und mit existierender Infrastruktur logistisch meisterbar.

  • Gerade als Speicher für elektrische Energie wäre die Methanolherstellung sinnvoll.

Want to learn how to build a powerful yet simple 5000W #Offgrid #solar #system? (It uses #powergrid as backup)

VideoVersion with very tiny batteries already Upgrades to 15kWh #LiFePo4 which lasts around 3 days, IMPORTANT: work with cell vendor that accepts returns because #China likes to mix #gradeA and #gradeB and sell as #gradeA (#eve 280Ah)

youtube.com/watch?v=nXfMzLFigA
#diy #doityourself #energy #independence #homestead #battery #batteries #energy #ElectricityBill #electricity #strom #voltronic

youtube.com- YouTubeEnjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

Been plagued all week with nasty respiratory bug that would *not* abate.

Feeling better now, and while leftover fatigue meant I didn't do a lot, today I *did* salvage an old 100AH proprietary solar battery pack into a container that I can actually self-service. #solar #diy #lifepo4