High battery drain after fully charged

I bought a forerunner 965 a few days ago. It came with 79% battery and I haven't charge it for a few days. Today when it reached ~ 50% I charged it to 100% (BTW: it was relatively fast to reach 99%, and then took lot of time to reach 100%) and the battery is draining very fast now. It lost 4% in the 1st hour. It looks like it's getting better with time (6% in 4 hours). On the other hand the built-in battery widget predicts 23 days. Is this something that will gett better after a few times I'll charge it?

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flocsy🤠 3 months ago in reply to 7693989 +1

It's not your specific device. It's all fr965-s since last firmware upgrade. Return it if you can and grab an fr955 IMHO.
socorsu 1 month ago +1

For your information Fenix 8 / Enduro 3 / Fenix E just received 11.64 with Battery Drain and Naps fixes.

Garmin-Sierra, Garmin yes you can, all FRx55/x65 are waiting for your feedback for a fix too
4904255 1 month ago +1

My Garmin Forerunner 965 watch has just started doing similar. Fully charged says 50 days, a week later 45, fine, then a few days later of wearing but not using it's 20 days. Maybe should replace the…

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0 flocsy🤠 9 months ago in reply to 8601638

Have your watch been connected via bluetooth during the night?

I found ANOTHER bug, one that I can reproduce 100%:
1. write down the time and the battery percentage
2. start an activity
3. enable airplane mode
4. stop the activity
5. wait a few hours
6. check the time and the battery percentage
7. disable airplane mode

You'll see that the battery is loosing around 5%/hour

0 8601638 9 months ago in reply to flocsy🤠

Hello Flocsy. The watch is not connected to the phone via bluetooth (phone bluetooth off). However, the watch's bluetooth is active.

0 flocsy🤠 9 months ago in reply to 8601638

Hmmm, so maybe it's a similar situation?
In my "scenario" I was doing an activity but didn't want it to be synced to Garmin Connect yet, that's why I enabled airplane mode (otherwise if I would only disable BT it would have synced it via WiFi I think)

0 oBuTTuSo 9 months ago in reply to 8601638

Press and hold top left button until watch goes black, wait a few seconds and then start it again. Then use it as normal until it goes dead, then charge back to 100 and see how it behaves. It could just be that the battery gauge hasn't calibrated yet on a new watch, and also that a restart after software update is recommended all over the internet... (I have no evidence of this, it's just a feeling based on my latest Garmin watches) I've never had any battery drain issues, regardless of model.

0 8601638 9 months ago in reply to oBuTTuSo

Ok. I'll try this and see how it goes. Thanks !

0 flocsy🤠 9 months ago in reply to oBuTTuSo

I also think that the original problem in this thread is caused by calibration issue

0 nbossgarmin 8 months ago in reply to flocsy🤠

I often use airplane mode during night and have sporadically massive battery drain. I'm still try to figure what exactly will cause the issue....

0 flocsy🤠 8 months ago in reply to nbossgarmin

IMHO this bug: https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-965/344835/high-battery-drain-after-fully-charged/1719871#1719871

0 7693989 3 months ago in reply to flocsy🤠

@garmin I have a new 2 weeks old Forerunner 965 that battery lasts 7 days with Display On Demand option turned on , for 4 second long , with two 20 min GPS exercise in a week . Oxygen measure is turned off . WIFI and Bloototh active and always in a range of the phone ....

This is sad , that the watch 680 $ is working even less time with the same settings as my old VIVOACTIVE 4

WHY THE BATTERY LIFE IS SO S*IT ???

According to Garmin it should last 23 days in the smartwatch mode (so wifi , notifications , bluetooth )

is my device faulty ? it last with Display on demand only 7 days , that is soooooo bad , I will probalby return the device

any help ????

0 flocsy🤠 3 months ago in reply to 7693989

It's not your specific device. It's all fr965-s since last firmware upgrade. Return it if you can and grab an fr955 IMHO.