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RETROAD DIY 8bit NES game cartridge, 136 of the best plus 7 Bonus Crappy Games Multi Cart,battery save|cartridge nes|cartridge gamecartridge battery - AliExpress
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![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. 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.](https://preview.redd.it/7x127m1x4sry.jpg?width=640&crop=smart&auto=webp&s=77af6ff34ac4da1cd31369c9641e9f64a6558d46)