Theory of Operation Power System Overview
8-14 PageWriter TC 70 Cardiograph Service Manual
Battery Charging Logic
Battery charging is controlled by the charger chip. The charger chip can:
Charge the battery when the system is in off mode, standby mode and run mode.
Alert the user when charging is recommended for the battery, when the system is powered
by battery only.
Battery Power Indicator
The battery power indicator appears on the Status Bar and is always visible. The indicator
displays the current battery power level. The cardiograph can operate on AC power while the
batteries are charging.
Figure 8-5 Battery Power Indicator on the Status Bar
You can touch the Battery Power Indicator on the Status Bar to ensure that the batteries are
fully charged. The Battery Status Information window appears. This window provides detailed
information on the status of the cardiograph batteries.
NOTE The battery indicator may not always accurately reflect the true charge state of the battery due to the
age of the battery, or due to failure to perform specified battery maintenance.
Table 8-1 describes the battery level indicator.
A Battery level indicator
A
Table 8-1 Battery Level Indicator Information (icon on Status Bar)
Battery Level Icon on Status Indicator
Fully Charged Battery
75% power capacity
50% power capacity
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