Battery And Antenna Installation - Garmin GPS 45 Owner's Manual & Reference

The GPS 45 provides 10 hours of operation in
normal mode and up to 20 hours of operation in
battery saver mode on 4 AA alkaline batteries.
Rechargeable Ni-Cad or lithium batteries may also
be used. Note that the battery level indicator is cal-
ibrated for alkaline batteries, and Ni-Cad and lithi-
um batteries will only show battery life at partial
scale. No other functions will be affected.
Battery Installation
To install batteries:
1. Remove the battery cover by turning the thumb
loop 1/4 turn counter-clockwise.
2. Insert batteries into position. The battery pole
you can still see should match the symbol
marked on the case
3. Replace the battery cover by turning the thumb
loop 1/4 turn clockwise.
Never store your GPS 45 without batteries. A built-
in capacitor will save almanac and waypoint data
while you are changing the batteries, but will only
save data for a period of time (a few hours). If
you're storing the unit for the season, put in a
fresh set of alkaline batteries to help prevent
loss of stored data.
Reference
Battery and
Antenna
Installation
Antenna Installation
The GPS 45's antenna
may be removed to
attach an optional
external marine or
automobile antenna.
To remove the antenna:
• Rotate the knurled
knob (located at the bot-
tom left of the antenna)
toward the front of the
unit one-quarter turn.
• Pull the antenna gen-
tly away from the unit.
• To install the antenna
or an external antenna
lead, mate the BNC con-
nector notches with the
mounting posts and turn
the knurled knob one-
quarter turn toward the
back of the unit.
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