Golden Compass HD GP620 SS Owner's Manual page 27

The Battery Gauge
The battery gauge comprises five different LEDs (1 x RED, 2 x AMBER, 2 x GREEN),
Battery
Gauge
Battery Gauge
Normal Operation
Battery Gauge
High voltage warning
A high voltage warning is indicated by all LEDs on, and the green LEDs
flashing. This occurs when the battery voltage level has risen above the
high voltage warning set-point.
Low voltage warning
A low voltage warning is indicated with the left-most LED flashing. This
occurs when the battery voltage level has dropped below its low voltage
warning set-point. Charge the batteries immediately.
Cut-off voltage
When the battery voltage drops below the battery cut-off voltage:
The first (red) LED will flash on the battery gauge.
The status indicator (under the power button) will display a flash code 2.
The horn will sound once every 10 seconds.
OPERATION
located above the horn button. The number of LEDs lit
depends on the status of the battery, as shown.
The battery gauge LEDs are also used to display charging
information. Refer to "Battery Charging" on pages 30-31.
Battery Level
Fully charged
Consider charging the battery
Battery needs charging
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