I remember reading the instruction book when I bought my Nike+ sensor that it would eventually die but I had no idea it would be so soon. I have to confess I never turn off the sensor and have run over 531 miles in the last year with it so it has certainly taken a beating but I would have expected it to last at least as long as a watch battery.

The units are sealed so it means I have to pay another $30 for a new sensor now. It's pretty good value if you break it down: $30 = about 5 cents per run OR 8 cents per day for statistics about my running patterns and a pace guide.

If your battery dies when you're in the middle of a run you can use WalkJogRun to plot your running route and see how far it was and how many calories you burned so all is not lost!

Find Running Routes at WalkJogRun  |  Check out the WalkJogRun iPhone App