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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.
edscoble-
Garmin themselves say to turn off GLONASS for longer battery life.
I was running the screen in manual mode, second darkest setting.
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Some says its finding satellite quicker thus less time searching, others adamant that it drain battery more having two system running.
The latter. More satellite signals mean more computation required which means more battery drain.
The time to initial lock of modern GPSes has been improved in lots of other ways (especially with the bluetooth/WiFi GPSes that download up-to-date ephemeris/almanac data rather than waiting to get it from the satellites themselves).
hippy
Greenbank
First short ride with 1000:
Pros
It didn't crash
You don't need to set turn by turn for every course individually (once I found it)
Cons
It's heavy and long so rotates on my TT mount.
It's slow calculating and recalculating, actually seems slower than 800 but maybe that's because I used the recalculate on route option?
When it's calculating or telling you you're off course it doesn't redraw the screen, so it looks like you're still on the course - cue extra mile detour to get to next RAB for a uturn.
The screen didn't respond well to my gloves - lucky they're full of holes so finger tip works better.
Probably more but I'll get used to it I guess.
Oh battery life down to 60% after a couple of hours. I'm going to disable Glonass to see if it's any better. Nothing else like WiFi or Bluetooth is on.