102 Accessories, Service, and Maintenance
can
operate
the
calculator
immediately
by using
the
batt
ery
charger/ac
adapter.
Even
though
you
are using
the
battery
charger/ac
adapter,
the batteries
must
remain
in
the calculator
whenever the calculator
is used.
CAUTION
Attempting to operate the HP-25 from the
ac
line with
the battery pack removed
may
result
in
damage
to your
calculator.
The
procedure
for using the
battery
charger
/
ac
ada
pter
is as
follows:
I.
If
your
charger
h
as
a line voltage
select
switch
, make
sure
it is
set
to the
proper
voltage.
The
two line voltage ranges
are
100 to
127
volts and 200 to 254 volts.
CAUTION
Your HP-25 may be damaged
if
it
is
connected
to the
charger
when the charger
is
not
set
for the correct line
voltage.
2.
Set
the
HP-25
power
switch
to
OFF.
3.
Insert
the female
battery
charger
/a
c
adapter
plug into the
rear
connector
of
the HP-25
and
insert
the
power
plug
into a live ac
power
outlet.
CAUTION
The use of a
charger
other than the HP battery
charger
supplied with the calculator may result
in
damage
to
your calculator.
Battery Charging
The
rechargeable
batteries
in
the
battery
pack
are being
charged
when
you
are
operating
the
calculator
from the
battery
charger
/
ac
adapter.
With
the
batteries in the
calculator
and
the
b
attery
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