After 320 hours and over 1900 miles together, my Garmin 305 just couldn't stand up to the challenge any longer.
The battery could only keep it powered for around 15 minutes. And that was if I yanked it off the charger and immediately shot out the door to start running.
A moment of sentiment since it ran with me on all of my first years of running. Including my first two marathons, thunderstorms, heat, cold, etc. Then the immediate realization that I had a completely valid excuse to go out and buy a new one!