SUUNTO D9 User Manual
Page 102
100
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Reduced gradient (variable) “M” values based on diving habit and dive viola-
tions. The “M” values are tracked up to 100 hours after a dive.
-
The EAN and oxygen exposure calculations are based on recommendations
by R.W. Hamilton, PhD and currently accepted exposure time limit tables and
principles.
Battery
D9:
-
One 3 V lithium battery: CR 2450
-
Battery storage time (shelf life): Up to three years.
-
Replacement: Every two years or more often depending on dive activity.
-
Life expectancy at 20°C [68°F]:
-
0 dives/y
-> 2 years
-
100 dives/y
-> 1,5 years
-
300 dives/y
-> 1 year
The following conditions have an affect on the expected battery lifetime:
-
The length of the dives.
-
The condition in which the unit is operated and stored (e.g. temperature/cold
conditions). Below 10°C [50°F] the expected battery lifetime is about 50-75%
of that at 20°C [68°F].
-
The use of the backlight and audible alarms.
-
Use of the compass
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The quality of the battery (some lithium batteries may exhaust unexpectedly,