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eTrex Owner’s Manual 41
Device Information
Specications
Water
resistance
Rugged plastic,
waterproof to IEC 60529
IPX7
Battery type 2 AA batteries, (alkaline,
NiMH, lithium, or
precharged NiMH)
Battery Life Up to 25 hours
Operating
temperature
range
From -4°F to 158°F
(-20°C to 70°C)
About the Batteries
WARNING
The temperature rating for the device
(page 41) may exceed the usable range
of some batteries. Alkaline batteries
can rupture at high temperatures.
Do not use a sharp object to remove
batteries.
CAUTION
Contact your local waste disposal
department to properly recycle the
batteries.
notice
Alkaline batteries lose a signicant
amount of their capacity as temperature
decreases. Therefore, use lithium
batteries when operating the device in
below-freezing conditions.
Maximizing Battery Life
You can do various things to increase
the battery life.
• Leave the backlight off when not
needed.
• Lower the backlight brightness
(page 40).
• Decrease the backlight timeout
(page 40).