G-858BP Backpack Mag Operators Manual
Battery Installation
GPS On-Off
Switch
Figure 18 Battery Installation procedure
The battery packs were fully
charged before leaving the factory, but
depending on storage time, they may need to
be recharged. The system may come with
the one of the battery packs pre-installed in
the pack frame box. In this case you will
check the voltage of the battery pack using
the G-858BP console battery meter (you
must turn on the G-858BP to see the meter
reading). Recharge time is approximately 6
to 8 hours per battery. The battery may be
recharged in the pack frame battery box
using the standard charger cable.
Locate one of the special 24 VDC
magnetically compensated battery packs is its
carrying pouch. Lift the battery by its
carrying strap and set it next to the pack
frame. You will need to lean the pack frame
assembly against a vertical support (tree or
vehicle) while you install the battery. Open
the G-858BP battery compartment and set the
battery on the open cover.
Inspect the connectors in the battery
compartment and on the battery and note that
they are keyed so that they can mate in only
one orientation. Line up the keyed sections
and firmly push the connector together.
There is no locking sleeve, the friction of the
rubber components will hold the connector
together.
Lift the battery pack and slide it into
the battery compartment, taking care to
position the connector above the battery
pack. When the battery is seated in the
compartment, close and lock the battery box
with the snap clasps.
Batteries will power the G-858BP
and Novatel GPS for between 5 and 7 hours
depending on operating temperature. Cold
temperatures will decrease battery capacity
and increase magnetometer current
requirements. Note that in very cold areas,
the cesium sensor should be enclosed in an
insulating jacket to keep heat loss to a
minimum and extend battery life.
There is a small toggle switch on the
top of the battery box for turning on the GPS.
Remember to turn this switch on prior to
mounting the pack frame on the operator!
NOTE To best maintain battery life, you
should periodically charge the batteries
(about every 4 months) if the unit is not in
use.
18
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