Summary
Low Power Mode on Apple Watch can reduce the amount of power used and extend battery life, allowing for longer workouts. It can be turned on in Control Center or Settings, and when the battery is charged to 80%, it will turn off automatically. Low Power Mode affects features such as the Always On display, Heart rate notifications, Background heart rate measurements, and Start workout reminder, and can be turned on automatically when used in the Workout app.
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With Low Power mode turned on, the Apple Watch Ultra can last roughly 15 or 16 hours
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, and when enabled, the system disables the always-on display, background heart rate and blood oxygen measurements, workout reminders, auto workout detection and notifications for irregular heart rate rhythm, high heart rate and low heart rate.
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According to
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Summary
Low Power Mode in watchOS 9 reduces the amount of power that an Apple Watch uses to save battery life. It can be turned on in Control Center or Settings, and when the battery is charged to 80%, it will turn off automatically. Low Power Mode affects features such as the Always On display, Heart rate notifications, Background heart rate measurements, and Start workout reminder, and can be turned on automatically when used in the Workout app.
Use Low Power Mode on your Apple Watch - Apple Support
apple.com
Summary
Without Low Power mode, the Apple Watch Ultra can last roughly 12-hours for a continuous workout, but with Low Power mode turned on it can extend that juice to about 15 or 16 hours — which should be enough for the wearer to finish an Ironman (all of which typically have cutoff at 17 hours).
How to Greatly Extend the Battery of Your Apple Watch Ultra
gearpatrol.com
Summary
When you turn on the Low Power Mode, the system disables the always-on display, background heart rate and blood oxygen measurements, workout reminders, auto workout detection and notifications for irregular heart rate rhythm, high heart rate and low heart rate.
A guide to Low Power Mode on the Apple Watch • TechCrunch
techcrunch.com
