Originally Posted by
vintagerando
10 hours? really. Is this in "power save" mode?
Doubt the 800 has power save, that’s on the newer units, mostly as they can be power hogs while navigating, using BlueTooth, etc..,
My Garmin 1000 has run 14 hrs with no navigation, about 10 with navigation on, but that’s at the extreme of capability, I’d say typically 10-12 hrs or 6-8 with navigation. And again, using BT to talk to a Di2 system, or do Live Track uses power as well. I think the Wahoo unit’s do slightly better at 10-15 hrs., maybe the Garmin 520 up near that as well.
Many really long distance folks use the Garmin hiking units, they use AA in some of the units, though with a dedicated cycling GPS you can also add a battery stick and get a few days out of it.