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How old is it? They dont last forever
But try these steps
Please clean the contacts
http://help.fitbit.com/articles/en_US/Help_article/My-tracker-s-battery-isn-t-charging/?q=not+chargi...
Then Do a Restart
http://help.fitbit.com/articles/en_US/Help_article/1186/?q=restart&l=en_US&fs=Search&pn=1
Also See this thread for charging best practices. If you are not charging it correctly you could be damaging the battery
https://community.fitbit.com/t5/Charge/Fitbit-charge-battery-problems/m-p/1323307#M53291
How can I Improve my Fitbit battery life?
http://help.fitbit.com/articles/en_US/Help_article/2004/?q=improve+the+battery&l=en_US&fs=Search&pn=...
http://help.fitbit.com/articles/en_US/Help_article/1799
If that does not help contact support
http://help.fitbit.com/?l=en_US&cu=1&fs=ContactUs
Wendy | CA | Moto G6 Android
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