Which consumes less battery ?
1. GPS
2. GPS + Glonass
3. GPS + Galileo
Why there is no option for only Galileo or Glonass ?
Which consumes less battery ?
1. GPS
2. GPS + Glonass
3. GPS + Galileo
Why there is no option for only Galileo or Glonass ?
From the Owner's Manual:
The GPS + GLONASS or GPS + GALILEO options offer increased performance in challenging environments and faster position acquisition than using GPS only. However, using GPS and another satellite system together can reduce battery life more quickly than using GPS only.
Read it for yourself here: Fenix 6 Series GPS and Other Satellite Systems
HTH
How they define "reduce battery life more quickly". What is the difference in battery life and why I can't choose only GALILEO?
The GALILEO satellite constellation isn't full operational; you wouldn't get an acceptable track using only that.
This isn't very helpful as it does tell us which suplimentary positioning system uses more battery, Glonass or Galileo