A guy I work with gave me his Polar CS200cad. He had put it on his bike, but never used it. It's all mounted on my bike, and it seems like the speed/cadence functions work fine (no "real" bike ride yet). I've also tested out the upload/download features with my computer and it works great.

I noticed it was hard to get a heart rate reading when riding the trainer, but I was right in front of the TV so that probably explains that. This morning I went skate skiing (crust cruising ), and put on the chest strap and put the computer in my pocket. I was out for over an hour and it had HR readings for about 3 minutes, not to mention that it says my max HR was 231bpm

I'm wondering if the battery in the strap is bad, or if there's something wrong with the strap itself. BTW: I even watched the video on the Polar web site to make sure I had it on right!

Anyone have any ideas about what could be going on?