Do not operate the charger until you confirm the appropriate charge mode for your battery.
Here is a brief description.
CHARGING MODES
# VOLTAGE MODE
DESCRIPTION
OUTPUT BATTERY
SIZE
1
12V
Normal
For charging 12-volt Flooded, Gel,
Maintenance-Free batteries.
14.5V /
1.5A
4Ah-50Ah
2
12V
Cold/
AGM
For charging 12-volt batteries in cold temperatures
below 50°F (10°C) or AGM batteries. When selected,
the LED will illuminate.
14.7V /
1.5A
4Ah-50Ah
3
6V
Normal
For charging 6-volt Flooded, Gel, Maintenance-Free
batteries. When selected, the LED will illuminate.
7.3V /
1.5A
4Ah-50Ah
4
6V
Cold/
AGM
For charging 6-volt batteries in cold temperatures
below 50°F (10°C) or AGM batteries. When selected,
the LED will illuminate.
7.4V /
1.5A
4Ah-50Ah
5
12.8V
Lithium
Press & Hold Mode
For charging 12.8-volt lithium iron phosphate batteries.
Lithium mode will only function if the battery voltage is
11.6V or greater. When selected, the LED will illuminate.
14.5V /
1.5A
3Ah-25Ah