Fixing Vba Pokemon Silver Time Issues My Pokemon Roms For VBA Say Internal Battery Has Died And Clock Based Events Wont Occur, What Does It Mean?

My pokemon roms for VBA say internal battery has died and clock based events wont occur, what does it mean? - fixing vba pokemon silver time issues

How do I fix that and I tried to download roms from different places, but everyone does that, I tried to use NO $ GBA, but also said that the files were corrupted. I play them, and Emerald, but it keeps the fire red and leaf green, they do not save everything. My other games like Kingdom Hearts and Final Fantasy all an excellent job, but these pokemons custom. Plz help!