Casio SLIM HARDWARE FX-9860G - Manual (Page 14)

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5 Power Supply
This calculator is powered by two AAA-size (LR03 (AM4)) batteries.
If the following message appears on the display, immediately turn off the calculator and
replace the batteries as instructed.
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 batteries at least once every one year, 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.
5-1
Power Supply