Terumo Advanced Perfusion System 1 Operator's Manual page 323

Additional Information
Every Two Years. . . Replace Your Batteries
Replace the batteries every two years OR whenever
CAUTION:
the batteries cannot be fully recharged within 13 hours OR
whenever fully charged batteries will not power the entire system
for at least 60 minutes.
The batteries must be replaced every two years. If the batteries
are not replaced, the system will post a reminder each time
the Main Screen is entered. The following message box will be
posted:
When OK is selected, the system will return to the Main Screen.
WARNING:
Do not operate the System with Batteries that have
exceeded their 2-year Service life. Less than specified battery life
may result. Contact Terumo Customer Service for replacement
batteries.
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