I'm proud margin trap gameboy save battery Savant Dedicate Prey
Battery replacement...can't save game fix : r/Gameboy
Save Battery Replacement Service – Game boy, Pokemon, N64 SNES – GeekGearStore
Why Do Gameboy Advance Games Die? – Retro Only
How to Change Game Boy Cartridge Battery : 8 Steps (with Pictures) - Instructables
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 long do the batteries in an original Gameboy and color cartridge last? - Quora