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Garmin 645 Music overall life

Anil
over 4 years ago

I have had my 645 Music for approximately 1.5 years now using it daily for runs / cycling and daily wear.  Am wondering how long these watches tend to last before having to buy a replacement.

  • 0 over 4 years ago

    Mine is 2 years old and still going strong. I imagine early adopters (those who purchased shortly after it was released in March 2018) are experiencing reduced battery life, though it would probably depend on the number of charge cycles. (It's much like a phone in this respect.) See this thread on the older 735XT: forums.garmin.com/.../sudden-battery-deterioration

  • 0 over 4 years ago

    Mine is 27 month old and I think that the capacity of the battery is around 70% more or less.

  • 0 over 4 years ago in reply to Oriol

    Lion batteries like the ones inside Garmin wearables are meant to last between 300 and 1000 complete(!) charging cycles  (depending on how they are treated and charged).So, depending on how long the battery of a watch lasts, you can somewhat estimate its lifetime.For example: the battery of a 645 lasts about 7 days in someones use case (number of hours with GPS tracking and so on), he:she can have about 400 weeks or 7 years before the battery is getting problems. If the battery of an Fenix 5X lasts 14 days in someones use case, it could last about 14 years, BUT will most likely getting problems because of ageing before.

    If you treat the battery nicely, keep it between 30 and 80% charge, never let it get really cold and let it go to 0%, you can perhaps get some years out of it.

    It depends very much on the use case, but should not be a concern with Garmin, or even the Apple Watch (for whatever reason). Fitbits on the other hand die a lot after two short years (for whatever reason).

    As long as the lugs don´t break, you should not bother thinking about life expectancy. 
    Those things are built to last. I have mine since April 2018 and still wear it from time to time without any problems.

  • 0 over 4 years ago

    My 645m is 26 months old. Similarly to Oriol, I reckon it's about 80% of what it was when it was new.  I could get 5 hours of running with music and navigation and now get about 4. 

    Note that Garmin do a battery replacement service so in theory you could extend the life of the watch as much as you like, as long as the rest of the hardware holds up. I've already replaced the strap. The question then becomes more about when there are new features in another watch that you want. From that point of view, the 645m is holding up pretty well for me. If I needed a replacement, the 245 would be out because I find Garmin Pay so handy and at £199 for a brand new 645m I'd struggle to justify paying double for the 745 for a very small range of additional functionality although I suppose I'll be tempted eventually! 

  • 0 over 4 years ago in reply to George

    Thanks for the note, that makes a lot of sense - hopefully mine dies soon so I can justify buying something from the MARQ collection.  Garmin if you're listening I'd love a loyalty credit to help me out :)