Sharp EL-9900 - Manual (Page 238)

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Appendix
1. Replacing Batteries
The calculator uses two different kinds of batteries: manganese (AAA) for unit
operation, and lithium (CR2032) for memory backup.
Compatible battery types
Type (use) Model Quantity
Manganese battery AAA 4
(for unit operation)
Lithium battery CR2032 1
(for memory backup)
* To prevent loss of stored data, DO NOT remove both the unit operation and
memory backup batteries at the same time.
• Fluid from a leaking battery accidentally entering an eye could
result in serious injury. Should this occur, wash with clean water
and immediately consult a doctor.
• Should fluid from a leaking battery come into contact with your
skin or clothes, immediately wash with clean water.
• If the product is not to be used for some time, to avoid damage
to the unit from leaking batteries, remove them and store in a
safe place.
• Do not leave exhausted batteries inside the product.
• Do not fit partially used batteries, and be sure not to mix
different batteries types.
• Keep batteries out of the reach of children.
• Do not allow batteries to become completely exhausted; doing
so may cause the batteries to leak, and may damage the
calculator’s hardware.
• Do not throw batteries into a fire or water, as this may cause
them to explode.
Precautions for
handling
batteries