Apple has brought a true power-saving mode to the Apple Watch in watchOS 9, which users can enable in the Settings screen or Control Center.
Like iPhone, Apple Watch by default automatically alerts users when the battery drops below 10 percent and lets them choose whether to enter power-saving mode.
Apple explains, “When your Apple Watch battery drops to 10 percent, you’ll be asked if you want to enable power saving mode. When Apple Watch reaches 80 percent charge, it automatically turns off Power Saver.
When Apple Watch enters power saving mode, it automatically turns off the more power-hungry features on Apple Watch, such as Always-On Display, arrhythmias, heart rate notifications for high and low heart rates, heart rate and blood oxygen measurements, and workout reminders.
In power-saving mode, Apple Watch will also automatically turn off Wi-Fi and cellular data connections, incoming calls and app notifications if it detects no bound iPhone nearby.
Apple says, “When Apple Watch enters power saving mode and there’s no iPhone near you, you can open an app and ask for a data connection, and Wi-Fi and cellular will automatically turn on. This consumes a lot of power, of course, and missed calls and notifications are received once every hour in power-saving mode.
In addition to turning off these features, Apple Watch will optimize other features to further reduce power consumption once it enters Power Saver mode, such as reducing the frequency of Siri and app refreshes in the background.
In addition, Apple Watch animations and scrolling may no longer be smooth after going into power saving mode.
