Philips 862478 - Manual (Page 49)

Battery Maintenance
Maintaining the Monitor 3-11
Battery
INOP
Messages
The following battery-related INOP messages are issued by the monitor. All Battery INOPs
continue until the monitor is plugged into the AC power or the INOP condition is fixed.
• "Low Battery" - This is an INOP which indicates that the remaining battery-operating
time is less than approximately 30 minutes.