Source for cheap recycled LiFePO4 cells?

mjp8081

100 W
Joined
May 12, 2009
Messages
164
Location
San Francisco Bay Area
I want to build a lithium lead acid replacement type battery bank for a solar and alternator powered RV (12.8v ~100ah, ~80a), on a budget.

Whats the cheapest source and or type (18650s, prismatic, etc) for cells?

I was thinking about maybe salvaged EV block cells, or someone online that refurbishes laptop batteries? Group buys?

I saw those 38120 cells on YouTube, those look great for output and simple screw terminals, are those cheap anywhere?

Whats the best "lego", no soldering method right now for combining cells/building banks?

Thanks everybody
 
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