savefile problems in FireRed

[Mr. Ultracool]

Hello everybody! I am a huge fan of the old Kanto remake FireRed and loved to play it both as a kid and now.

However, my savefile keeps getting deleted! It had already happened a few years ago, and happened recently as well! It is not the batteries fault, as I had them changed just before this happened. If anybody knows why this happens and/or how to prevent this, let me know!