There was a fairly big discussion on this topic earlier about GLONASS actually and whether it eat more battery or not.
Some says its finding satellite quicker thus less time searching, others adamant that it drain battery more having two system running.
IMO, it's the screen that drain the majority of the batteries.
Garmin themselves say to turn off GLONASS for longer battery life.
I was running the screen in manual mode, second darkest setting.
@hippy started
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There was a fairly big discussion on this topic earlier about GLONASS actually and whether it eat more battery or not.
Some says its finding satellite quicker thus less time searching, others adamant that it drain battery more having two system running.
IMO, it's the screen that drain the majority of the batteries.