For years our watches could automatically switch to Battery Saver during the hours defined as Sleep Mode.
- It preserved battery (typically 2-4 % per night on my fēnix 8).
- It prevented late-night notifications when we forget to silence the phone.
- It eliminated unnecessary night-time Bluetooth/Wi-Fi emissions.
Many of us deliberately chose Garmin over other brands because this small, thoughtful feature existed. Unfortunately, FW 15.31 (May 2025) removed the setting without warning. A Garmin moderator confirmed the change was “by design” two weeks ago https://forums.garmin.com/outdoor-recreation/outdoor-recreation/f/fenix-8-series/382678/airplane-battery-saver-mode-not-activated-during-sleep/1935832#
The result is a poorer user experience: the watch now polls for the phone all night, burns extra battery, and wakes light sleepers with “Phone disconnected” alerts—unless we remember to drill through menus every evening.
Kindly restore the automatic Battery-Saver/Sleep option (or at least give us a toggle in Power Manager).
Re-enabling it would:
- maintain sleep tracking accuracy (it already worked fine before FW 15.31);(Garmin-Laurie stated that it was the reason for removal: https://forums.garmin.com/outdoor-recreation/outdoor-recreation/f/fenix-8-series/382678/airplane-battery-saver-mode-not-activated-during-sleep/1935832# )
- satisfy users who value long endurance and low-EMF nights;
- align with Garmin’s reputation for giving power users granular control.
Thank you for listening.
We kindly urge Garmin to bring back this feature in future updates. If you agree, please comment below and share your experience - let’s make our voices heard!
