Game Boy Advance Cartridge Battery Replacement - iFixit Repair Guide
Replacing the battery in Gameboy game cartridges [UPDATE] - Robert's Blog
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.
Game Boy Color - Cartridge Battery Mod - Game Save Battery Holder Hack - CR1220 - YouTube
How to change a Game Boy game battery without soldering - Gamer By Mistake
Kupo!1UP: How To Change Dead Batteries On GameBoy Cartridges (Without Soldering Iron)
How to make your old Game Boy as good as (or better than) new | Ars Technica
nintendo - GameBoy Color games do not save any more - Retrocomputing Stack Exchange
How to Change Game Boy Cartridge Battery : 8 Steps (with Pictures) - Instructables
How to replace a GameBoy cartridge battery without losing saved data - Gamer By Mistake
Game Boy Advance Cartridge Battery Replacement - iFixit Repair Guide