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Battery charge, rapid drain, recharge

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  • Battery charge, rapid drain, recharge

    Since I've had this watch I've had to charge to 100%, wait a few minutes for rapid battery drain and plug the watch back in to reach 100% again.

    After 3 or 4 cyclles of this, the watch eventually settles at 0.5% drain per hour and lasts 4 days with 2 or 3 GPS runs.

    Since 5.7 it's horrendous.
    Currently on 6th cycle of replugging the watch back in and draining at 6% per hour.


  • #2
    Is it winter there? My VA3 (and lots of other electronic gadgets) also have problems with incorrect battery status but this is due to the under freezing temperatures. Yesterday battery was reporting 3% (outside it was -2C) and after some minutes indoor it went back up to 8% even if I did not charge. Not much we can do about it, Lithium batteries do not like the cold.

    Also be aware that in most cases, this rapid "drain" is a actually not a battery drain but just inaccurate readings on the battery voltage sensor. Maybe it goes down 5% very fast, but then it stabilises and the actual battery time will be the same.

    Finally you don't need to charge up to 100%. It's actually better for the battery health to charge just under the peak capacity, around 95%, and don't let it always go all the way down to close to 0% - once it's below 50% you should recharge if possible. For the VA3 specifically, I usually put in on the charger daily while I shower. If I forget one day or another, no bid deal, as the capacity is big enough and it does charge relatively fast.

    Some more info & tips:


    • #3
      You might be onto something here, although in my case it's not the cold but the opposite. The battery charges very quickly therefore it heats up. I presume this will have the opposite of a cold battery and gave it a false full charge. As the battery cools down, it's charge drops and gives us that big battery drop. Explains why another recharge would top it up. The battery doesn't have time to heat up as much.


      • #4
        You are correct, the battery drain is higher on 5.70 than on 5.50. On 5.50 it was 0.4% - 0.5% /hour. On 5.70 it is 0.7% - 0.8% / hour. Calculated on "My battery" app.
        Last edited by dddbbb9; Today, 02:31 PM.


        • #5
          You cannot compare the battery drain right after unplugging the watch with the real drain.
          I often charge the watch on my computer. This always results in 6-8% drain after a couple of minutes. From then on, it takes 10-20% a day, due to my activities.

          To prevent the watch from doing that, it seems to help by
          1. using a wall plug
          2. load the watch turned off

          Devices: Forerunner 405, Vivoactive & Virb X & XE
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