The Sense chargers are crap. Check the pins. I find that the lower left pin is the one that most frequently fails to extend. I have blown through three fitbit chargers and three aftermarket chargers with the same problem. The aftermarket chargers are cheaper and faster to ship, and they don't further enrich Fitbit for making a terrible product.
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If you want a more robust charger and are prepared to wait, click photo.
Author | ch, passion for improvement.
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