I realize my mileage may vary but I need to get an actual mileage value to even determine if it HAS varied.This manual gets you started quickly getting your tracker on your wrist then setting Now I'm seeing a steady decline - can I expect another six months? a year? or should I be shopping for a replacement now because the decline speeds up and my Flex will likely be dead in another couple of weeks? I got a solid 2 1/2 years of a charge lasting for 7-8 days.

What I'm looking for with this post is a reasonable timeframe to determine whether the current increasing charging frequency is sign of my Flex reaching the end of it's useful life or not. My question is - and will continue to be - what is a reasonable life expectancy for a Flex? I'm not looking for tips to clean or reset my Flex - I know how to do those things and have done them. I have no complaints about my Flex and will replace with another Fitbit when this one does finally die. Only since I purchased a 3rd party charger have things worked and worked well. I got a replacement charger from Fitbit that was marginally better than the one that came with my Flex but still amazingly painful to deal with. I had many problems early on with the Fitbit charger. Today after 5 days with no low battery warning it was dead. Over the last month or so it has dropped to a reliable 6 days per charge. I've had mine over two years and for most of that time I've been getting 7-8 days per charge. I've seen several threads asking this question with not one single response giving even the broadest of ranges for how long a typical properly cared-for Flex may last.

Fitbit flex 3