Philips PageWriter 100 Instructions For Use Manual page 21

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PageWriter 100 M1772A Cardiograph
l The PageWriter 100 cardiograph has a battery-saving feature: it
will turn itself to Standby (off) after 30 minutes of instrument
inactivity. This prevents the cardiograph from being
accidentally left on for extended periods of time.
This feature is not active if all the limb electrodes are connected
to a patient or if the cardiograph is plugged into AC power.
l
A new battery or a battery that has been stored for an extended
period of time requires charging (with the cardiograph in
Standby (off)) for 16 hours.
l
The battery, if installed, is being charged any time the AC light
is on.
l A fully depleted battery will charge to 90% of full capacity in 7
hours, and 100% capacity in 16 hours, as long as the
cardiograph is in Standby (off) for the entire time.
l
When the cardiograph is not in use, it should be connected to
AC power and left in Standby (off). This will maintain a full
battery charge and prolong battery life.
The cardiograph's battery charging circuit delivers less power than the
cardiograph uses while printing an ECG. If a Manual ECG is being
recorded, the battery charge level will continue to drop until the
instrument shuts itself down or is turned to Standby (off) by the
operator.
AC and DC (Battery) Operation
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