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Battery doesn't even last one day

chiefplt
over 4 years ago

I just bought a refurbished Forerunner 945. I have followed most of the suggestions for maximizing battery life. Pulse Ox is off. Watch Face doesn't have seconds. I do have heart rate on and activity tracking. But that's all.

I've been getting less than a day from the battery. Overnight it drains alone 40%. I've been having to charge it twice a day. 

Is there any seeing I'm missing that could be causing it to drain quickly? I think it may be a defective unit. Does that sound likely?

  • 0 over 4 years ago

    That doesn’t sound good at all, I’m getting 7-10 days with depending on how many gps activities I do with everything apart from pulse ox on. 

    Contact Garmin or whoever was the supplier for the refurbished unit. 

  • 0 over 4 years ago

    I wrote below the steps I would have done in order of severity:

    Have you checked you are running the latest firmware?

    Have you tried restarting it?

    Have you tried soft reset?

    Have you tried hard reset?

  • 0 over 4 years ago

    What are your backlight settings? 
    I use the shortest posible timeout setting, so backlight is off most of the time. 

  • 0 over 4 years ago in reply to Oren

    Yeah, I just tried the hard reset. After resetting to factory defaults and recharging to 100%, I'm down to 90% battery after 2 hours. I think something is wrong with the unit.

  • 0 over 4 years ago in reply to Dr Phil

    Garmin refurbished it.

  • 0 over 4 years ago

    It indeed sounds like there is something wrong with your FR945. I'm running latest updates, Pulse Ox on at night, activity tracking and daily 1,5 hour gps exercise and the battery survives all this between 4 and 5 days. I did switch off WiFi, don't use the watch for phone notifications and use a build-in watch-face.

    In your case, I would take the watch back to where you bought it and get it exchanged.

  • 0 over 2 years ago

    My garmin fr 945 battery now goes 1 day max. Contacted garmin and told them to replace the battery and they told me that they dont do replacements of battery but replacement of the whole watch and i have to pay 180 euros... bad service and very dissapointed. I paid 500 euros to buy a watch that every 2 years needs replacement and have to pay for it 180 euros. If i knew that i wouldnt buy any garmin at all

  • 0 over 2 years ago in reply to 3041346

    This is typical for non-user-serviceable batteries. Not knowing where you got the watch and when, since the 945 was released in April 2019. It's possible the battery has gone through the typical lifespan of 500 discharge cycles.

  • 0 over 2 years ago in reply to 2271429

    I got it brand new from garmin Cyprus before two years and 3 monts.  But its ridiculous not to replace battery and also have to pay 180 euros for replacement