Building Batteries for my Minivan Camper Van out of Used 18650 Lithium Cells?

I have gotten a lot of tool and laptop batteries from the recycle bins at Lowes and Home Depot. I want Lithium Batteries to keep me offgrid in my minivan camper while I see the country. I needed juice and I knew how to build better stuff than those Jackery style units and all those batteries were just laying there in the bin.
I used this website to help me sort the cells into equal groups.
www.repackr.com
If you want to see what we get up to in My Honda Odyssey camper van go here.
/ letsgolook1

[@lmorrison17]

Id love to have 200AH LiFePo4 prismatic batteries but these were free, just a lot more work.

[@MoBangFoYoBucks]

That's a tedious job to build the power pack yourself. Kudo to you brother!! 😎👍

[@lmorrison17]

Testing the individual cells is the worst part. Thanks Tim

[@ImChrisDeDecker]

Wow, that is impressive.

[@elpigioj.aquinojr.9395]

hi, whats the brand you your spot welder and where did you bought it? TIA

[@lmorrison17]

I bought it on Aliexpress, but there are some caveats. I beefed up some high current areas, I blew one up, I got one that was DOA, and I doubled up my input wire. I have purchased 4 units and none are ezactly alike but they all operate and preform the same. when I get a moment I can look for a link on aliexpress.