Garrett Investigator G-500 Owner's Manual page 22

BATTERIES
The Investigator G-500 is equipped with two
battery packs, each holding four (4) standard
AA batteries. The detector is also designed to
utilize nickel cadmium (NiCad) rechargeable
batteries. It is advisable to remove the battery
packs when the detector is not in use, particu-
larly for a period of several weeks. Always
remember that all adjustments or settings you
have entered into the detector will be lost (and
factory settings reinstated) when batteries are
removed for approximately four minutes or
more.
Although standard battery packs and optional
NiCad packs can be used interchangeably in
the detector, it is recommended that both
packs being used at the same time always be
the same type. You should also always load
your packs with the same type of battery. For
example, don't mix carbon zinc and alkaline
cells.
The Investigator G-500 should operate 25 to
42
35 hours with carbon or alkaline batteries,
NiCads should power the detector from 8 to 12
hours on a full charge. These estimates are for
speaker operation. Operating with head-
phones will extend battery life.
Checking Condition
Battery condition is reported continuously by
the horizontal row of squares on the lower right
side of the GTA display of the G-500. Four
squares are visible when fully charged batter-
ies are being used. When only one square
appears, remaining battery life is some two
hours or less. Although it is not necessary to
change batteries until this warning flashes, you
should always carry spares so that you will be
ready. When using NiCad rechargeable batter-
ies, only three squares are sometimes illumi-
nated with fully charged batteries. Again, how-
ever, when only one square is visible, battery
life has diminished to two hours or less.
Garrett G-500 PN 1529570 Rev B
43