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Accessing The Battery Status Window - Philips M3001A Service Manual

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Battery Handling, Maintenance and Good Practices
3
4
5
6
7
A Note on Trickle Charging
Trickle charging means a low current is applied to a fully charged battery to keep the charge
at 100%. (The self-discharge of NiMH batteries is in the range of 20-25% per month!).
Trickle charging accelerates the aging of the battery and is not recommended for batteries
that are only used occasionally. In such cases the battery should be kept separate from the
monitor and charged every three to four months to prevent deep discharge. Deep discharge
occurs when the battery has a relative state of charge of 0%.
NOTE
If you cannot avoid trickle charging, use the Battery Charger and Conditioner (M8043A) to
recondition the battery once a month. See the instructions that accompany the charger for
details on charger use.
Trickle charging only takes place for batteries stored in a monitor connected to AC mains.
You can leave batteries in the Battery Charger and Conditioner (M8043A), as no trickle
charging takes place.

Accessing the Battery Status Window

The Battery Status window shows additional information about the battery. To access this
window, press the Setup key on the front panel and select Battery from the list. The Monitor
displays a screen similar to the following:
The meaning of the messages are described in the following paragraphs.
Time to Empty—This refers to the approximate (+/- 10%) battery-usage time remaining in
the battery. The number is based on the average monitor-loading during the previous minute.
Time to Full—This refers to the approximate (+/- 10%) time remaining to fully charge the
battery. The number is based on the average monitor-loading during the previous minute.
132
Turn on the monitor, and leave it on until it switches off automatically.
Turn the monitor off using the
Reconnect the monitor to the AC power supply.
Charge the battery until it is full (the battery LED on the monitor is green).
Repeat steps 2 to 6.
Duracell TR36
TimeToEmpty:
Capacity
remaining : 1247 mAh
fullCharge: 1852 mAh
designed
On/Off/Standby
switch.
Battery Status
12.0V SN 00292 07JUL98 SBM 1.0
112 min +/- 10%(est. 1 min avg)
Current
Voltage
Temperature:
: 2400 mAh
Cycles
: 284.0 mAh
:
12.9 V
23.0 C
:
234
Exit
Maintaining the Instrument

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