Battery holder installed for easy battery replacements. All-Stars feels under rated for such a great remake of the originals. : r/snes
Preservation project. I'm upgrading old NES and SNES cartridges with better eprom batteries and battery holders. You'll lose your save games with the mod, but get years more use from old games.
1-10pcs Repair Battery Holder For NES FC for SFC SNES N64 Game Card Cartridge CR2032 Battery Holder - AliExpress
10PCS CR2032 Battery Holder For FC SFC NES SNES N64 Game Card
CR2032 battery holder for Game Boy GB NES SFC N64 Game Cartridge | eBay
FC SFC NES SNES N64 CR2032 Battery Holder S8421-45R – kasynparts