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31 Using the Batteries Optimizing Battery Performance
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Display Brightness Setting
♦ In the Main Setup menu, select User Interface -> Brightness - > Optimum.
This selects a level of brightness suitable for most monitoring locations that uses less battery power
than brighter settings.
Satisfy yourself that this level of brightness is suitable for your monitoring location.
Note that your monitor may be configured to dim or brighten the display brightness automatically
when you disconnect from power, to suit the most common transport scenario
(“TransportBrightn” setting).
Charging Batteries
Batteries can be charged in monitors used to monitor patients. Charging is quicker in unused
monitors. Contact your local Philips representative for information on external battery chargers. Use
only Lithium Ion battery chargers approved by Philips.
1 Insert the batteries into a monitor connected to mains power. The battery LED will light yellow to
indicate that charging is in process.
2 Charge the battery until it is full, the battery LED is green, and the battery power gauge is fully
shaded.
Conditioning Batteries
CAUTION Do not use a monitor being used to monitor patients to condition batteries. The monitor switches off
automatically when the batteries are empty.
You must condition a battery when its “battery requires maintenance” symbol shows on the Screen. Do
not interrupt the charge or discharge cycle during conditioning. To condition a battery,
1 Insert the battery into a monitor connected to mains power.
2 Charge the battery until it is completely full. Open the Battery Status window and check
that the Batteries fully charged or Battery 1 / Battery 2 fully charged
message is displayed.
3 Disconnect the monitor from mains power, and let the monitor run until the battery is empty and
the monitor switches itself off.
4 Reconnect the monitor to mains power and charge the battery until it is full for use or charge to
50% for storage.
Contact your local Philips representative for information on external battery chargers/conditioners.
Use only Lithium Ion battery chargers approved by Philips.
Unequally-Charged Batteries
If two batteries in a monitor are unequally charged, the monitor can compensate by causing the fuller
battery to discharge faster. For this mechanism to work, the charge state of the two batteries should not
differ by more than 50%.