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Do you get a lot of notifications? As it can drain the battery.
Try these steps to see if it improves
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
http://help.fitbit.com/articles/en_US/Help_article/1799
Wendy | CA | Moto G6 Android
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