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.
Battery Holder Upgrade for NES, SNES, N64, GameBoy Games Fits CR2032 – RetroFixes
The Legend of Zelda ORIGINAL NINTENDO NES GAME Gold Cartridge NEW SAVE BATTERY! | eBay
Amazon.com: NES/SNES Save Battery Replacement Kit (includes installation instructions) : Video Games
Top Quality 852 In 1 Battery Save Game Card 72 Pins 8bit Game Cartridge For Nes - Buy 852 In 1,Game Cartridge,For Nes Product on Alibaba.com
The Legend of Zelda ORIGINAL NINTENDO NES GAME Gold Cartridge NEW SAVE BATTERY!
How To Change An SNES Game-Save Battery - RetroGaming with Racketboy
The Legend of Zelda ORIGINAL NINTENDO NES GAME Gold Cartridge NEW SAVE – The Game Island
NES battery replacement for games that stopped saving - Howchoo
Free Shipping high quality 72Pins NES Game Cartridge with 150in1 no repeat games with battery save|cartridge nes|cartridge gamecartridge battery - AliExpress
The Legend of Zelda ORIGINAL NINTENDO NES GAME Gold Cartridge NEW SAVE BATTERY! | eBay
NES battery replacement for games that stopped saving - Howchoo
Complete List of Nintendo NES Games with Save Batteries - DKOldies: Retro Game Store
How To Change An NES Game-Save Battery - RetroGaming with Racketboy
Amazon.com: CR2032 Batteries 10 Pack, NES SNES N64 Battery CR2032 with Solder Tabs, 3V Battery CR2032 Battery, Batteries CR2032 3V Lithium Battery, Save Game Cartridge Replacement, 2032 Battery CR2032 Lithium 3V :
NES battery replacement for games that stopped saving - Howchoo
BEST* GAME SAVE BATTERY REPLACEMENT REPAIR SERVICE Fix NES SNES N64 Gameboy gba | eBay
Multiple Colors To Choose From Non-battery Archive For Nes 852 In 1 For Nes Game Card - Buy High Quality 852 In 1 Nes Game Card,Non-battery Archive 852 In 1 Game Card,852
Super 68 in 1 Game Cartridge for S N E S 16 Bit Multicart NTSC Super S N E S USA Version((25 games Can Battery Save)|Replacement Parts & Accessories| - AliExpress
NES battery replacement for games that stopped saving - Howchoo
BATTERY SAVE GAME FIX REPLACEMENT REPAIR,NES,SNES,BOY,N64 N 64,SUPER NINTENDO👍 | eBay
