الوادي ماديسون انظر من خلال how to change the battery on a gameboy cartridge تخطى سلسلة الاعصار
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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