I designed this quick holder for 2430 lithium cells which power my Zigbee wall switches, so I had somewhere compact and handy to store them, while also remembering which ones are charged and discharged.
I've included the Fusion 360 archive file in case you want to make any modifications.
The text spacing is too small to really come out at 0.4mm nozzle size. So I'll try to get a version uploaded without it as well, or maybe with just a + on one end.
The author hasn't provided the model origin yet.