These solutions apply to all Fitbit models.
Use a toothbrush and water to eliminate dust and debris interference on the unit charging contacts.
Also, use a cotton swab and rubbing alcohol on the charging cable pins.
Lifewire / Jason Schneider
While you’re at it, use a gentle soap and water to clean your Fitbit’s band.
Fully charge the Fitbit.
Use the provided charging cable to bring the battery to 100%.
Fitbit says that a full charge could take one to two hours.
Fitbit recommends avoiding leaving a unit charging for longer than overnight.
Use an AC wall adapter.
A restart can resolve issues your gear is experiencing.
This process usually involves plugging the Fitbit in and pressing a button for a few seconds.
If one restart doesn’t do the trick, you might need to try this process a few times.
You could also try alternating equipment charges with equipment restarts.
Factory reset your Fitbit.
Contact Fitbit customer support.
If these charging and restart methods don’t move the needle, you might have a hardware problem.
Why Won’t My Fitbit Turn On?
Plug in and reset your Fitbit to see if that helps.
It’s likely that your screen wake parameters have changed somehow.
Your Fitbit’s battery is probably dead or dying.
