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The Fitbit Charge 4 is a fitness tracker released in March 2020. It's new features include Active Minutes tracking, Spotify controls and Fitbit Pay.

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Does anyone know the charger pin out for Charge 4?

Hi, trying to temp charge my Fitbit over the Christmas week, I have 400 ways to do this safely, but I don’t have the pin out from the charger socket thing, as it is on my couch! I even brought the 3D printer… Please help!

One will be 5V USB power, the other will be 0V. I’m 90% there’s just two pins, the further apart ones, that go on to the 3 connectors on the back of the Charge 4.

Thanks!

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Found that they are the same on the 3 and 4, so details here: Fitbit Charge 3 charging pinout?

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