How to Change Game Boy Cartridge Battery : 8 Steps (with Pictures) - Instructables
How a Gameboy cartridge looks on the inside – AllAgora
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.
Replace a Game Boy Cartridge Battery in Minutes - YouTube
Gameboy Battery Replacement - CR2032 will fit in any GB/GBC/GBA cart : r/ Gameboy