Your pokemon are about to die.
Do you know how pokemon games are saved?
Inside every gen 1 and 2 cartridge is a small battery that keeps the game powered at all times. Without these batteries every time you turn off your Gameboy you'd lose your save no matter what.
There is such a small power draw that they can last for years........about 15 years to be exact.
Pokemon was launched in North America on the 30th of September 1998.
Just under 14 years ago. Cherish your childhood while you still can. It will be gone forever soon.