Replacing The Backup Battery; When To Replace - Sharp COMPET QS-2130 Operation Manual

Replacing the Backup Battery

The backup battery can support the solar cell for approximately seven years at room temperature
(20°C/68°F).
If a weak battery is left in the calculator, the memory contents may be lost.

When to replace:

•
At least once every seven years, even if the calculator is functioning properly.
•
The memory contents become null.
•
The display dims in dark places.
•
The display will not appear in insufficient lighting by pressing the
automatically turned off.
key after the power is
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