Originally Posted by
SJUAMMF
I use a Garmin eTrex Venture Cx for travel and it has 32 hours of battery life, good enough for a trip across the ocean. The best high sensitivity in the eTrex series (e.g. H, HC, HCx versions) have about 25 hours battery life.
Back to GPS...What type of battery were you using? I used Energizer Lithium batteries in my Etrex Vista HCx and it lasted from DFW-ORD-FCO and for two days on the tour bus after that (with compass off). I would say that I got 32+hrs out of them. And the batteries are lightweight and resistant to cold!