I don't know why, but when I went in to the store to get a new charger for my FitBit Alta, I accidentally grabbed one for the FitBit Alta HR, which does not work with the non-HR Alta. I didn't realize my mistake until I had opened up the box, pulled the charger out and noticed it was not compatible.
Returning the opened item and exchanging it for the proper one was super easy, and it's Best Buy's great customer service that keeps me coming back.
The overall rating is knocked one star not for anything Best Buy has done but for my dissatisfaction with FitBit for having to have different chargers for seemingly every model, even ones within the same grouping. This is my third FitBit, having upgraded from a Flex to a Charge to this Alta. Each one of them had its own unique charger that wouldn't work with any of the others. I've been an Apple user for many years now, and I can use the same charger for my iPhone and my iPad. Even when they did change the charger a few years ago, Apple made the change across the board for all products, and even provided an adapter for those with older headphones with RCA jacks, so those headphones could still be used with the new products. That is how you keep customers happy. Hopefully FitBit learns this lesson. Many products, one charger.