I just replaced the battery in my 3in1 and the card wasn't generating a sav. file. I tested the battery on my multi meter and I was getting good contact. I thought my card might be broken but that didn't seem right so I figured that I wasn't getting good contact for some reason. The new battery was creating a slight bulge in the shell. I then made a paper shim and placed it under the contacts. That fixed the problem. What the hell. It stopped working again.