sp4 pen

I bought a SP 4 about two years ago and since the orginal battery ran out (after about a year), I've had to replace the battery about every two weeks, even though I'm barely using it. I was wondering if any one else had encountered this problem and whether there is a solution? Will Microsoft...

I just got my SP4 yesterday, and it worked wonderfully. Me being curious I removed the battery cap. Now the pen doesn't work anymore. The back button (eraser button) still works, and the pen still pairs to my SP4, but it doesn't move the cursor, and it doesn't write. Did I break the pen or can I...