Check the listing for details. 1x CR1616 Save Battery Tabs Pokemon Gameboy Advance GBA Ruby Sapphire Emerald. Condition: New. Listed at 0.99 USD. ONE (1) CR1616 replacement coin cell save battery with tabs. Do your games no longer save? If this is the case then you need a new save battery.These are the exact same batteries used in Pokémon Emerald, Sapphire, Ruby, Puzzle Challenge, Yellow and Trading Card Edition plus many other Game Boy games.All Game Boy games that use battery back-ups use either CR2025 or CR1616 coin cell batteries. To determine which one your game uses open them up and measure the diameter of the battery. A CR2025 coin cell battery is 20mm wide while a CR1616 coin cell battery is 16mm wide.You will need a soldering iron to install these. In order to open your game cartridges you will need a security bit. GameBoy Original and GameBoy Color games use a 3.8mm nutsetter security bit while GameBoy Advance games use a triwing security bit. WE SHIP FROM THE UNITED STATES. SHIPPING IS FAST AND ALWAYS FREE!