Carbest CD Series Owner's Manual page 21

7.2 Battery Status Indicator
CD series : 2 LEDs show the state of the battery's charge
First LED flashing : Battery capacity <25%
First LED on : Battery capacity between 25% and 75%
Third LED on : Battery capacity >75%
7.3 Fault Finding
Fault LED flashes when there is an open circuit or if there is an overload or
short circuit.
7.4 DC Output Switch
This switch turns the DC output on and off.
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