Wonderswan NiMH battery holder

this is not designed for FDM printing, so I am not sure it will work if you try

you will need to source some nickle strips to make contact with between the battery and the wonderswan's battery terminals. I used 0.1mm thick by 4mm tall nickle strips

I have mine friction fit, but for best results, you should spot weld the battery

Adapted to hold a rechargeable NiMH gumstick style battery