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EBAY has vendors selling used lifepo4 cells with 95% life expectancy remaining. Check out this YT channel. He constructs his own, explains 'balancing' the entire series, and talks in depth of a quality BMS. Ali Express sells lithium cells but you'd be investing more $$ to put a bank together. I think he spent $200 on a 100 amp hour 12 volt battery with 95% life remaining from components purchased on Ebay.
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2017 Keystone Bullet 308BHS in Saddle.
2017 RAM 2500 Laramie Mega Cab 4x4 Hemi 6.4L
2008 GMC Yukon XL Denali (SOLD)
Hensley SwiftArrow Control Hitch with 1000 lb Spring Bars
Me, DW, (3) little DS's, and 1 rambunctious Boston Terrier
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