The Garmin Forerunner 955 Solar has two settings that, when turned off, can squeeze out a final few dozen hours of Garmin Forerunner 955 Solar Smart Watch Battery life from the lowest possible level.
The first setting: Turn off “Auto-select Satellite Mode” and force a switch to “UltraTrac”.
Most people don’t know that the default “Multi-Frequency Multi-Satellite” or “Auto-select” mode on the Garmin Forerunner 955 Solar is the number one culprit for battery drain.
Multi-frequency multi-satellite (GPS+GLONASS+Galileo+BeiDou) positioning accuracy is extremely high, suitable for urban high-rise buildings or dense forest environments, but it drains the battery extremely quickly—in real-world testing, it drains about 6%-8% of theGarmin Forerunner 955 Solar Smart Watch Batteryin one hour. That means a 10% battery level on a Garmin Forerunner 955 Solar will only last for about two hours in this mode. I turned it off, went to Settings → Satellite → Mode → and selected “UltraTrac”.
UltraTrac is Garmin’s power-saving GPS mode specifically designed for ultra-long distances.
After switching to UltraTrac, the GPS battery life of the 955 Solar jumped from 42 hours to over 80 hours. A 10% battery level on the Garmin Forerunner 955 Solar watch can last at least 8-10 hours in this mode.
Second: Turn off “Wrist Heart Rate” + “Auto Blood Oxygen Monitoring”
Many people think heart rate is essential for running, but when the Garmin Forerunner 955 Solar Smart Watch Battery is critically low, you have to make trade-offs.
Go to Settings → Sensors → Wrist Heart Rate → Turn off. Also find Pulse Oxygen → Turn off “All-Day Monitoring” and “Sleep Monitoring”.
After turning them off, the watch no longer actively measures heart rate and blood oxygen, only retaining basic step counting and GPS track recording.
After turning off these two settings, the Garmin Forerunner 955 Solar watch, in UltraTrac mode, showed an estimated battery life of 11 hours and 23 minutes with 10% battery remaining.
Since CP4, I’ve set the watch to these settings. Screen brightness is also reduced to the lowest level (5%), Bluetooth connection to the phone is turned off (to avoid power consumption from Bluetooth broadcasts), automatic backlight on/off, and only manual button presses are enabled for data viewing.
The map page is closed, leaving only the most basic “distance + time + pace” data bars. Map rendering is a major CPU consumer; turning it off added about an hour to theGarmin Forerunner 955 Solar Smart Watch Battery life.
Summary: The 955 Solar’s Three Essential Lifesaving Measures
If you find yourself in a situation where your Garmin Forerunner 955 Solar watch has only 10% battery left but you need to complete a long distance, remember these two core settings to disable + one alternative:
Satellite Mode → UltraTrac (saves over 50% power)
Wrist Heart Rate + Automatic Blood Oxygen Monitoring → All Off (saves 20%-30% power)
(Alternative) Disable map rendering, Bluetooth, and automatic backlight
The Garmin 955 Solar is a great watch, but even the best battery can’t withstand mindless default settings. Turning off unnecessary functions isn’t a compromise, it’s wisdom.
Don’t let 10% Garmin Forerunner 955 Solar Smart Watch Batteryon your Garmin Forerunner 955 Solar watch become the reason for dropping out of your next 100km race.
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