What is the average battery life of an NES cartridge?

How many years does an NES cartridge battery last?

  • Why is it needed to hold reset when powering off the NES?
  • Disabling 10NES Chip
  • How can I get an NES controller to work on my PC as a Joystick?
  • Why doesn't Duck Hunt work on plasma or LCD screens?
  • My Nintendo has a blinking light and no video; is it fixable?
  • Will the NES Zapper light gun work on a CRT HDTV?
  • We love Playing Games, especially Video Games.