Opticon H19А - Manual (Page 20)

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Chapter 1. Knowing Your Device
Optimizing the Power Performance
• Tap > Settings > System tab > Power > Advanced, and adjust the time for turning off
the device if it is not in use.
The backup battery powers a real-time clock (RTC) which keeps track of the time even when
your device is turned off. When the backup battery power is normal or full, it can keep
accurate real time for five minutes even if the main battery is removed and for up to 18
hours while the main battery is low.