Casio fx-9750G PLUS - Manual (Page 460)

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Appendix B Power Supply
This calculator is powered by four AAA-size (LR03 (AM4) or R03 (UM-4))
batteries. In addition, it uses a single CR2032 lithium battery as a back up power
supply for the memory.
If the following message appears on the display, immediately turn off the calculator
and replace batteries.
If you try to continue using the calculator, it will automatically turn off in order to
protect memory contents. You will not be able to turn power back on until you
replace batteries.
Be sure to replace the main batteries at least once every two years, no matter how
much you use the calculator during that time.
The batteries that come with this calculator discharge slightly during shipment and
storage. Because of this, they may require replacement sooner than the normal
expected battery life.
Warning!
All memory contents will be deleted if you remove both the main power supply
and the memory back up batteries at the same time. If you ever remove both
batteries, correctly reload them and then perform the reset operation.
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Replacing Batteries
Precautions:
Incorrectly using batteries can cause them to burst or leak, possibly damaging the
interior of the calculator. Note the following precautions:
• Be sure that the positive (+) and negative (–) poles of each battery are facing in
the proper directions.
• Never mix batteries of different types.
• Never mix old batteries and new ones.
• Never leave dead batteries in the battery
compartment.
• Remove the batteries if you do not plan
to use the calculator for long periods.
• Never try to recharge the batteries
supplied with the calculator.
• Do not expose batteries to direct heat, let them become shorted, or try to take
them apart.