Welch Allyn 1500 Patient Monitor v.1.4.X - User Manual - Manual (Page 27)

Directions for use Operation 23
Battery operation
Two batteries are available for the monitor:
• Lithium-Ion battery : This type of battery will provide power for approximately two
hours when fully charged.
• Lead acid battery : This type of battery will provide power for approximately one hour
when fully charged.
When running on battery power the battery symbol is displayed next to the time. The
battery indicator gives an approximate guide to the capacity of the battery:
When the battery capacity is close to depletion:
• the alarm message Battery low appears
• the battery symbol flashes
• an audible alarm beep is heard
• the visual alarm indicator flashes blue
• After a few minutes if the monitor is not connected to the mains supply, the message
Battery nearly depleted
is displayed and a continuous beep is heard; the monitor
switches off. If mains is connected during this period the monitor remains on.
Connect the monitor to the mains supply. For battery recharging, see “Recharging the
battery” on page 101.
• Full = between 87.5% and 100% capacity
• 3/4 full = between 62.5% and 87.5% capacity
• Half full = between 37.5% and 62.5% capacity
• 1/4 full = between 12.5% and 37.5% capacity
• Empty = between 0% and 12.5% capacity
Visual Alarm Indicator