Problems saving data with Saturn games

[Ninja4820]

I have a JP Saturn, reason being I want to play my copy of Radiant Silvergun. Well, I also Bought "NiGHTS Into Dreams..." since I heard that was pretty good. So I have an ST-key to play NiGHTS. But I can't seem to hold saved data. If I save NiGHTS data, turn off the console and turn back on, the data is still there. If I turn off the console, leave, come back hours later, the data is gone. If I turn off the console, switch to Radiant Silvergun(leaving the ST-Key in) save Radiant Silvergun data. Come back to NiGHTS, the NiGHTS data is gone, so then I switch back to RSG and that data is gone.

Any ideas on what to do? being able to save would be nice, lol.

Thanks in advance! ^^

[Funk Buddy]

Did you try changing the battery?

[Disconnected]

Changing the battery is easy just pop the plastic piece out of the back and switch it out. I think its just a standard watch battery.

[Ninja4820]

Oh, ha ha. I didn't realize you could change the battery. Ok, so it's the little plastic hatch on the back side. The side that the chords go into, right?

Well, what kind of battery would I need? As in what model or type of watch battery? I don't want to get one too small, but looking at it I can't really tell. Might it be written some where in that area?

[Funk Buddy]

It's the same as the Dreamcast VMU. I think it's a CR2032.

[LiquidX01]

Yes its a CR2032. I have new batteries laying around so if you need one just PM me and I'll send you one.