Soldered Battery to a Gameboy Advance Game PCB so it can save, it still does not want to save. | TechPowerUp Forums
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Replacement Lithium Battery Module for Gameboy Advance Game Console Mod for GBA Battery Mod with Punch Back Cover Game Accessory| | - AliExpress
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Amazon.com: VI VINTRONS Nintendo Advance SP Battery Replacement for Nintendo Advance SP, AGS-001, GBA SP, : Video Games
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