NewMar 12-1800IC, Installation & Operation Manual, Page: 13 / 23

Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: sales@newmarpower.com
www.newmarpower.com
P.O. Box 1306
Newport Beach,
California 92663
13
B) Charger Output Selector
The ideal charge regimen for gel-cell and flooded (wet) lead-acid or AGM (Absorbed Glass
Mat) batteries differs somewhat. Gelled electrolyte may be lost or damaged by high voltage
and, once lost, cannot be replaced as it can with a wet lead acid battery. (The charge regimen
recommended for AGM batteries is typically similar to that of flooded lead-acid batteries.)
Consequently, the charger is equipped with a switch for selecting the proper charge voltage,
based on battery type.
The Charger Output Selector is a recessed selector switch also located on the right-hand side
of the unit, near the rear, beside the Battery Capacity selector. There are four positions on
this selector;
only positions C or D (depending on battery type) are used for normal charger
operation. (The A and B positions are used for a special equalization output, which is dis-
cussed shortly.)
Verify the type of batteries being used, then use a small flat-tip screwdriver to place the
selector into the correct position according to the following chart (this information is also
duplicated on the unit beside the selector port).
Note: Mixing of battery types such as gel-cell
and flooded on the output of the charger is not recommended, even if output is split among
multiple banks with an isolator or integrator:
Charger Output Selection Chart: 12 Volt Models
Switch Output Voltage (VDC)
Position Use For @ Charge @ Float
A Equalization CAUTION 15.2 13.2
B Equalization CAUTION 14.6 13.2
C Flooded/AGM Charging 14.2 13.2
D Gel-Cell Charging 13.8 13.2
Charger Output Selection Chart: 24 Volt Models
Switch Output Voltage (VDC)
Position Use For @ Charge @ Float
A Equalization CAUTION 30.4 26.4
B Equalization CAUTION 29.2 26.4
C Flooded/AGM Charging 28.4 26.4
D Gel-Cell Charging 27.6 26.4
Charger Output Selection Chart: 32 Volt Models
Switch Output Voltage (VDC)
Position Use For @ Charge @ Float
A Equalization CAUTION 40.7 35.2
B Equalization CAUTION 39.2 35.2
C Flooded/AGM Charging 37.9 35.2
D Gel-Cell Charging 36.8 35.2