Power bank battery cell holder

thingiverse

I bought this "DIY" 12 cell power bank from AliExpress. The product is well made and I wanted to use high quality LG 18650 cells. When I went to install the batteries, they fit poorly in the device. https://www.aliexpress.us/item/2251832856362040.html?spm=a2g0o.order_list.0.0.4ce81802VH96Jj&gatewayAdapt=glo2usa&_randl_shipto=US I didn't like how the batteries fit so I designed and printed holder. You can see the picture from AliExpress with the batteries loose and also my solution with the holders. I printed them out of ABS for heat resistance reasons. P.S. As an aside, the 18650 cells fit so badly that I assumed the product was instead designed for rectangular batteries. The description says either 12 round 18650's or 4 large rectangular cells. For the second one I did, I bought rectangular cells and they also fit badly! I'll now need to design a holder for those...