The lithium batteries for your power wall i understand man. Good job on saving money on those.. But these old laptop batteries?
If you don't mind may i ask what you use them for? Thats a lot of junk that could be flammable if i understand correctly.
I hope you understand that the batteries for his power wall come from those laptop batteries right? He tears the laptop battery casings open to extract the Lithium cells then proceeds to test and bin accordingly.