dbnewton
Contributor
When I have time I am going to consider a different battery type but need to think that through and anyway I am on a live aboard now so not any option but to keep feeding it alkaline AA's.
With 36 dives now I used three Alkaline batteries. The first two went much faster than the third. About 8 dives each on the first two and 20 on the third. I kind of suspect the first two were weak to start with and the 20 might be more representative of the life of a strong Alkaline battery. BTW the entire 36 have not depleted even the first CR2 in the sending unit.
Dives here are typically 60 minutes, I power up on the way to the dive site for plan/check, power down when back on the boat, then power up one more time on the live aboard to log so total time might be ~90 minutes per dive. Of those maybe 10 are out of range of the sending unit (or sending unit off) which puts the wrist unit into a high power drain condition. If I forget to power it off after the dive than another 15 minutes in the rinse tank in high power mode while it times out.