Factory second hand batteries

[wme]

Well at least they are advertising them properly....Only a semi mystery battery

https://www.timeusbpower.com/collections/second-hand-lifepo4-battery-95-new/products/12v100ah-smart-second-hand-lifepo4-battery.

But it has some warranty

 

[efficientPV]

Returns are an immense problem for sellers. Places like amazon allow returns for no reason. I do buy returned items with warrantee like at amazon and they are like new, just an open box. Also buy from liquidators and most times they are just a new open box and never used. I've bought #20K cars with no warrantee at dealer auctions, It all depends on your tolerance for risk,