Really,my Red & Blue still work and save perfectly and I've had them ever since they came out. Granted I don't play them all the time like I used to but every time I turn them on the save file is still there. Now my Yellow version in recent years has gone in and out, but that's only because I used the Gameshark a few times with it,and from what I heard, the Gameshark drains the batteries substantially. Now I have opened up both my Red and Blue versions and according to the date on the batteries,they should last till 2012, how ironic :P