I have an old GPSMap195 that had quite a thirst for the best Alklaline.I put 6 of them there Energizer Lithiums (Tesco 3.79/4) in and I am still waiting for them to pack in after several flights.
p.s. Anyone got an AA power pack for a 195 as it would be nice to have one standing by?
Oh yes,I can still use (and do) a chart,DI,compass and stopwatch.
MM