How to change a Game Boy game battery without soldering
CR1616 Battery Holder for Game Boy Advance (GBA) Cartridges Set of 3 - UK | eBay
Game Save Battery Replacement. – RetroSavers
Game Boy Advance Cartridge Battery Replacement - iFixit Repair Guide
my copy of pokemon silver cartridge shipped with a bad save battery. i'd only be able to get to the fourth gym or so before the batteries in my gameboy would die.
How to Change Game Boy Cartridge Battery : 8 Steps (with Pictures) - Instructables