Battery Charging Operation - Rae QRAE PLUS PGM-2000 Operation & Maintenance Manual

OPERATION OF ACCESSORIES
3.1.

Battery Charging Operation

The charging circuit of the QRAE PLUS is built into the monitor.
It only needs a 120 VAC to 12 VDC adapter (RAE 500-0036-
000, CSA/UL approved) to charge the monitor.
Note: For European markets, Adapter P/N 500-0072 is required.
Connect the AC adapter (or the optional automotive charging
adapter) to the DC jack on the QRAE PLUS monitor. The
charging function will begin. For example, the display will show:
Charging... 3.9V
Time used= 0 min
The charging LED should be red in color when charging. If the
battery is fully charged, the LED will change from red to green.
The red color indicates that the battery is being fast charged.
The green color indicates that the battery is fully charged. The
display will also indicate "Fully charged." It takes about 8 hours
to fully charge the batteries.
Fully charged.
The smart charging circuitry in the QRAE PLUS will protect the
battery from overcharge or over discharge, so removing the
charger is not required.
The battery of the QRAE PLUS monitor will be drained slowly
even if the monitor is turned off. If the monitor is not charged for
25 days, the battery voltage will be low.
Note: The monitor draws power from the battery pack even
when the power is turned off. It is very important to disconnect
the battery pack before servicing or replacing sensors or any
other components inside the monitor. Severe damage to the
circuit board may occur if the battery pack is not disconnected
before servicing the unit.
3-2