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MAINTENANCE FOR AREARAE STEEL
7-4
7.3 Battery Replacement
When the display shows a flashing message “Bat,” the battery
requires recharging. The battery may be replaced in the field
(in areas known to be non-hazardous) if required. It is
recommended to recharge the AreaRAE Steel monitor upon
returning from fieldwork. A fully charged battery powers the
AreaRAE Steel monitor for up to 24 hours’ continuous
operation. The charging time is typically less than 10 hours for
a fully discharged battery. The built-in charging circuit is
controlled by two-step constant voltage/constant current
charging to prevent overcharging.
WARNING
To reduce the risk of ignition of hazardous atmospheres,
recharge the battery only in areas known to be non-hazardous.
Remove and replace battery only in areas known to be non-
hazardous.