How to Replace Pokemon Gold Battery with a Soldering Iron – Video Game Museum, Blog, & Store
Pokemon Ruby - Real McCoy's internal battery | From Septembe… | Ryan Smith | Flickr
Update. The game works! Unfortunately, the internal battery is dead.(can it be replaced?) the game is only up to the 3rd gym, so I want feel bad about restarting it. : r/pokemon
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 replace the battery of a Pokémon game - Gamer By Mistake