Check the listing for details. GameBoy Advance GBA Battery SOCKET-RETAINER Upgrade-Replacement Service -Pokemon. Condition: New. Listed at 30.00 USD. Have a bad battery in your GBA or GBC game? Want to extend the life of your current save? WISH YOU COULD JUST OPEN YOUR CARTRIDGE AND POP OUT THE DEAD BATTERY? Now you can! BULK DISCOUNTS AVAILABLE What You Get GameBoy & GameBoy Color Games:Professional Installation of a battery socket and new CR1616 BatterySave Backup and Restore for games with existing save data Continuity Test and assurance that the cartridge closes flush as beforeGameBoy Advance Games:Professional Installation of a battery socket and new CR1616 BatteryContinuity Test and assurance that the cartridge closes flush as before*Real Time Clock (RTC) synchronization for GBA games (notably Pokemon) Other Cartridges Supported (Please message first):NESSNESN64SEGA GenesisSEGA Game Gearand others... What You Need to DoPurchase this service for as many games as you need (discounts for more than 1)Tell us which games you are sending, if there is existing save data, and if you want the RTC synchronized (select GBA only)Ship your games to the provided address via Messages (you pay shipping) How Long it will TakeService time is 1 Business Day upon receiving your game(s)Shipping is through USPS First Class (1-5 Days); Expedited Shipping available for a fee What to ExpectWhatever save data is on your game when you send it to us, is what you will have when you receive it backYour game will look and function identicallyYou will never have to pay some guy to replace your battery ever again!Answers to all your questions! *What does Real Time Clock synchronization mean? When you replace a battery in a GBA game, features that utilize the battery will resume, but the in game clock (RTC) will reset to 0. This can be an issue in certain scenarios where the game checks the play time against the in game clock (RTC), like when trying to distribute Jirachi from the Pokemon Colosseum Bonus Disk to Ruby or Sapphire. Synchronizing the RTC usually requires you to reset and save the game after replacing a battery, but we are able to do it via a custom tool.