18
GENERAL
INFORMATION
Accessories
Four
1.5
v.
size
AA
alkaline
batteries
Converter / Charger
for
operation
on household
AC
current
Nickel
Cadmium
rechargeable batteries
Soft
contoured
zippered cover
Battery Life
Alkaline
batteries: average operating
time
20
hours depending on batteries used*
Nickel
Cadmium
rechargeable batteries:
operating
time
11
hours on a
full
charge
Battery Discharge
When the
Model
30
is
approaching discharge,
the
display
will
flicker
and
then blank.
No
erroneous
calculation
will
result
when
the
batteries approach
discharge. However,
this
is
your
signal
to
replace
or
recharge the batteries.
*
For
longer
battery
Iife, replacement batteries such
as
Mallory
MN
1500
or
Eveready E91 shou Id be used.
AC Operation with Converter/Charger
Connect
the
Converter
/ Charger
to
your
Model
30
making
sure
the three holes in
the
plug
align
with
the
three prongs in the
calculator
(illus.1
l.
Then
connect
Converter
to
an
appropriate
AC
outlet
(illus.2l.
Operation
on
AC
current
can
take
place
with
or
without
batteries
in
place.
Charging the Model
30
Connect
the
Converter
/Charger
to
your
Model
30
making
sure
the three holes in the plug align
with
the
three
prongs in
the
calculator
(illus.1
).
Then
connect
Converter
to
an
appropriate
AC
outlet
(illus.2).
Charging
time
ranges
from
12
to
14
hours. The
calculator
can be used
while
being recharged.
Warn ing: Never leave
the
Converter/ Charger connected
to
the
calculator
when
not
connected
to
an
AC
outlet
since
this
will
cause
battery
discharge.
(1)
(2)
19
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