CipherLab RK25WO Reference Manual page 51

BATTERY OPTIMIZATION
With Battery optimization enabled for the applications, you can make sure they stay
inactive when your device is idle or when they have not been used for days.
1) On Battery screen, tap More
2) On dropdown list, select "All apps"; all the applications will be optimized by this
function by default. You can individually turn off the optimization mode of a certain app
if you would like it always activated by tapping on the app name and select "Don't
optimize" and then "DONE".
and then select "Battery optimization".
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Using RK25WO Mobile Computer