
My Fitbit Alta has 3 charging ports. This one has 2. I didn't realize this fact until it was plugged in for a day and never charged. I returned it and explained that it was wrong and that one was needed with 3 connectors. I quickly got a new one, but it also had 2 prongs. I sent it back and will try somewhere else. Edited 12/7. After looking for a new supplier for this charger, I found that the configuration of the charging points was correct. I opened the second one, plugged it in and my Fitbit was fully charged in less than 2 hours. So I kept it and am changing my rating from 1 to 5 stars. I think the first one was just bad, but the return process couldn't have been better. I got a new one before returning the first one. About 2 days.

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