SUUNTO D3 - Manual (Page 72)

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The following conditions have an affect on the expected battery lifetime:
• The length and type 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 may
be 50-75% of that at 20°C [68°F].
• The use of the backlight and audible alarms.
• The quality of the battery (some lithium batteries may exhaust unexpect-
edly, which cannot be tested in advance).
• The time the dive computer has been stored until it gets to the customer.
The battery is installed into the unit at the factory.
NOTE: Low temperature or an internal oxidation of the battery may cause the
battery warning to operate even though the battery has enough capacity. In this
case, the warning usually disappears when the Dive Mode is activated again.