Installation StepsSelecting Battery TypeThe NLDC-25 will optimise charge voltage based on the selected batterytype.Remove the NLDC-25 top cover to access the battery select button.The battery type can be selected by pressing the “Battery” button on theNLDC-25 control panel. The chosen battery type is displayed.Ÿ Disconnect the main battery before starting installation.Ÿ Install the NLDC-25 using the mounting feet. (Described on page 4).Ÿ Install positive and negative cables from the Auxiliary battery to the NLDC-25. Connect to the AUX and GND terminals respectively.Ÿ Install one in-line fuse on the positive cable near to the Auxiliary battery. Do not connect the battery yet.Ÿ Install positive and negative cables from the NLDC-25 to the Main battery. Connect to the ALT and GND terminals respectively.Ÿ Install one in-line fuse on the positive cable near to the Main battery.Ÿ If a solar panel is used, connect the positive and negative cables from the solar panel to the SOLAR and GND terminals respectively.Ÿ Connect the temperature compensation probe and IGN over-ride cable if used. (See page 8).Ÿ Install the remote monitor (if used) and run its cable to the remote monitor port on the NLDC-25. (See page 9).Ÿ Double check all cables and connections for correct installation.Ÿ Re-connect the Main battery. The NLDC-25 should now be powered and will show status on the status display.Ÿ Select the Auxiliary battery type. See “Selecting Battery Type” below.Ÿ Connect the Auxiliary battery.Ÿ If the remote monitor is installed, the voltages of the Main and Auxiliary batteries will now be displayed.Ÿ The system is now ready.WetAGM / GelCa+Li-ion Used for automotive Lithium-ion or LiFebatteries.Used for regular automotive startingand flooded high-cycle batteries.Used for flooded deep-cycle, calcium andmaintenance - free batteries.Used for all types of AGM and Gelbatteries.For safety reasons, the battery type cannot be changed if theAUX battery is already connected.7