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turn the power on again.
2-8. BATTERY SYSTEM
This model is equipped with a battery system that provides back up power to
the register memory if the power cord is accidentally disconnected or if a power
interruption occurs.
The register program, the transaction totals, and the grand total will be retained
in the machine because of the memory protection feature. The average span of life
is approximately 60 days after a power interruption.
These batteries recharge automatically when the machine is plugged in.