It is a lot of 5 replacement batteries for Pokémon Red, Blue, Yellow, Ruby, Sapphire, Emerald. (I also have batteries for Pokémon Gold, Silver, Crystal and for Nintendo NES, Super Nintendo (SNES), Nintendo 64, Sega Mega Drive / Genesis and Sega 32 X cartridges, please look at my other items).

If your game have saving problemsit's because the battery is empty, you need to change it to fix the problem.

Changing the battery is very easy, you have to desold the battery on the cartridge and sold this one in the same place respecting the polarity.
To open Game Boy and Game Boy Color cartridges (Red/Blue/Yellow, Gold/Silver/Crystal), you need a 3.8 mm Gamebit you can find in my shop. Open to Game Boy Advance cartridges (Ruby/Sapphire/Emerald), you need a triwing screwdriver you can find in my shop.

It is a pile of spare for games Pokémon red, blue, yellow. (I also have batteries for the other Pokemon games as well as for cartridges of Nintendo NES, Super Nintendo (SNES), Nintendo 64, Sega Mega Drive and Sega 32 X, look at my ads).

If your cartridge has issues of safeguardis that the internal battery is exhausted, it must be changed to take advantage again of his game cartridge.

Changing the battery is very easy, but unsolder the battery in the cartridge and weld it in place respecting the sense.
To open the cartridges of Game Boy and Game Boy Color (red/blue/yellow, gold/silver/Crystal), you need a mouthpiece Gamebit 3.8 mm you can find in my shop. To open the Game Boy Advance cartridges (ruby/sapphire/emerald), you need a screwdriver, triwing you can find in my shop.