Curtis 1605 Instructions Manual page 11

If no indicators are on, AC power is not
available or there may be a problem with the
charger. Make sure the AC outlet is operational.
If the problem persists, the charger may need
to be serviced.
3. Waiting for Charging to Complete
The GREEN indicator turns on when charging is
complete. Charge time depends on size of battery and how
much charge it needs. Charge time may vary from less than
1 hour to 12 hours.
4. Unplugging Charger
Unplug the charger from the AC outlet. All indicators
should turn off.
5. Disconnecting Charger from Battery
Disconnect the charger output connector from the
vehicle or battery connector (if accessible).
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