QRAE II User Guide
Page 9
Note:
A spare battery can be charged by placing it directly on the charging cradle. See
“Charging A Spare QRAE II Battery” on page 57 for details.
Note:
An Alkaline Battery Adapter (part number 020-3403-000), which uses three AA
alkaline batteries, may be substituted for the Li-Ion battery. See page 47 for details.
WARNING!
To reduce the risk of ignition of hazardous atmospheres, recharge batteries only in
areas known to be non-hazardous
.
Remove and replace batteries only in areas
known to be non-hazardous.
2.1
Low Voltage Warning
When the battery’s charge falls below the shutoff voltage, the display shows:
Battery low,
turning off. . .
The QRAE II then turns itself off. Recharge the battery by placing the QRAE II in its
cradle.
2.2
Clock Battery
An internal clock battery is mounted on one of the QRAE II’s printed circuit boards. This
long-life battery keeps settings in memory from being lost whenever the Li-ion battery or
alkaline batteries are removed. This backup battery should last approximately five years,
and must be replaced by an authorized RAE Systems service technician. It is not user-
replaceable.
