Why is my watch not holding its charge?

backsquatbunny Registered Users Posts: 2
Apprentice Traveler
edited January 24 in TomTom Sports
I have a tomtom runner 2 cardio, when the the battery runs down I charge it up. But it now doesn’t hold
its charge anymore. During a race it died on me and it’s frustrating. I have had it for 2 years.