Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4579532.

Four cell case for the ip5328p charge board. I plan to redo this in the future for some skinny li-po batteries, as all my 18650s are pretty much perma dead now.

You can see from the pictures that I tried to make the bank expandable, to add more cells, but it was too unstable and I ended up gluing it all together. So the models here are solid pieces.

Print the button and led bits separate and super slow, like 3mm/s. They're small and won't take long, but need the precision.

I used the nickle strips and springs from another stock aliexpress 18650 power bank.

Future improvements? I'm pretty happy with the way it all fits. Maybe the LED bit needs some tweaking. I don't like how hard it is to see the individual LEDs on the board, but right now the LED piece holds the board in place and I'm not a fan of just having holes in the lid of the bank.

Feel free to tweak by copying the thingiverse file: https://www.tinkercad.com/things/1o633Y4mv0M-power-bank-ip5328p