AA to C battery converter
thingiverse
Inspired by enif's Yet Another AA to C Battery Adapter (https://www.thingiverse.com/thing:1719966). This is a sleeve that fits over a AA battery to give it the thickness of a C battery. I use them to fit NiMH rechargeables in things that usually require C batteries. The centre slot for the AA is a touch tight at 14mm, and the outer edge is 24mm wide. The sleeve is designed to stretch over the AA battery for a snug fit, and the sleeve stretches to about 25mm when the battery is inserted. Total height is 48mm, sleeving over the main body of the AA and allowing the positive end to protrude. Direction inserted doesn't matter, it's the same at both ends. Minimalist but decently sturdy design that saves on plastic.
With this file you will be able to print AA to C battery converter with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on AA to C battery converter.