Liaizon Wakest on Nostr: I found these plastic things at the Green Project (a scrap recycling thrift store) ...

I found these plastic things at the Green Project (a scrap recycling thrift store) and they are almost the exact size to hold 9 18650s. Has anyone here built battery packs from raw 18650s before and think this would work? I was thinking I'd drill holes into each compartment to solder them together