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APPENDIX D – OPERATING
INSTRUCTIONS
Please follow the guidelines listed in this
section for proper care and operation of
your calculator. Not following the instruc-
tions listed below may result in damage
not covered by your warranty. Refer to the
Repair and Return section for more
details.
Do not expose calculator to temperatures
outside the operating temperature range
of 32ºF – 104ºF (0ºC – 40ºC).
Do not expose calculator to high moisture
such as submersion in water, heavy rain,
etc.
BATTERY
Your calculator is powered by a single 3-
Volt Lithium CR-2016 battery. This should
last approximately 800 hours of actual use
(1 year plus for most people). Should the
display become very dim or erratic,
replace the battery.
WARNING: Please
use caution when disposing of your old
batteries as they contain hazardous chem-
icals.
Note: Replacement batteries are available at
most discount or electronic stores. You may also
call Calculated Industries at 1-775-885-4900.