essentially what the title says: this aiwa came without a battery cover, and I'd love to not have to rely on tape to keep my AAAs in place, so if anyone has a 3d printable model of the battery cover for the adapter pictured here, and is willing to share it, that'd certainly make my day.
Hi, this kind of battery cover is found easily on minidisc players. If i were you i'd search for either aiwa minidisc players with the same battery cover or check ebay for minidisc battery holders. If ebay doesn't work look also at japanese yahoo auction sites through forwarding sites like buyee