Replacing vintage game batteries is a must. Not only will this restore the save function but will preserve your game. When game batteries age they will eventually leak on the motherboard and cause damage.
Batteries are easy to replace if you have soldering skills. This CR2032 is the exact size of battery used in Nintendo 64, N64, SNES, or NES games. Many tutorials can be found onine
Tools needed for most games:
3.8mm or 4.5mm Game Bit (sold in my store)
Solder and Iron
We offer install service for batteries if needed. Check our other store services for more info.