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How to HUGELY improve Forerunner 245 battery life.

Just turn off your alarms.

Could not believe my eyes today when I saw only ~ 10 % / day battery drain compared to like 35 % / day lately after I turned off my alarms yesterday.

I hope Garmin knows about this and fixes it. Unless it’s unfixable due to the way the alarms work.

0 flocsy🤠 over 3 years ago

Curious: does your watchface display some info about the alarms?

0 Steve over 3 years ago in reply to flocsy🤠

No. I tried different watchfaces. Including Garmin stock without seconds and no HR etc. updating once every minute.

What else I noticed: running the timer drains the battery even more. Even if it’s finished and just showing the countdown time.

0 2359574 over 3 years ago

Good to know, thanks.

I find that turning off phone sync on the watch makes a big difference. I usually disable sync when I go to bed and re-enable when I get up. Just long-press the light button to access the shortcuts.

This adds about two days to the battery life for me.

0 rentagreement over 2 years ago

Hi, I cant confirm that alarm or timer drain the battery. I have 8 alarms daily every day of the week and am using the timer function 3-5 times daily... no visible impact on the battery drain

i do switch off phone sync most of the time, as it clearly has impact on battery life.

0 1117029 over 2 years ago

Do you mean alarms as in high/low heart rate alerts or just simple time alarms?

0 rentagreement over 2 years ago in reply to 1117029

i mean time alarms

0 gaalx (UA) over 2 years ago in reply to rentagreement

If you turn off pairing with your phone, then an important function of the watch is lost - a smart watch.