Hello @TZier and welcome to the Community. Thank you for not tossing your old Fitbit in the trash. Rechargeable batteries should not go in regular trash. Check your local area for recycling tips. Some hardware stores, like Home Depot in the US, have battery drop off bins. My county has a hazardous waste drop off for all kinds of hazardous waste.
Laurie | Maryland
Sense 2, Luxe, Aria 2 | iOS | Mac OS
Take a look at the Fitbit help site for further assistance and information.
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