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Dual Battery Controller


PLEASE BE ADVISED that this item works seamlessly with the Intelligent Solenoid and Portable Power Pack.

The National Luna Dual Battery Controller is specifically designed to be used with the Intelligent Solenoid or the Portable Power Pack. The controller monitors battery levels and offers an override function, which is useful for winching or start assistance when the main battery is low.


  • Monitors the charge level of both batteries using voltage and percentage based scales.
  • Low-Voltage Audible Alarm will let you know when your battery is running low.
  • High-Voltage Audible Alarm will let you know if an unsafe level of current is flowing through your system.
  • Manually override the solenoid connection for jump starting and winching.
  • Lights and alarms can be manually shut off.

For more information about Split Charger Systems and Installation, download the manual.

National Luna Dual Battery Controller Features

  • Simple Installation
  • Two Individual Battery Displays
  • Excessive Discharge Warning
  • Over-Charge Warning
  • Polarity Protected
  • Extremely Low Power Consumption
  • Programmed for Non-Linear Lead-Acid Battery Characteristics
  • Audible Alarm Comes Standard (Can Be Muted)
  • Display On / Off Feature (Sleep Mode)
  • 3-Year Comprehensive Warranty
National Luna Dual Battery Controller Specifications


Face Plate: 4 7/8"L x 2 5/8"W

Cut Out: 4 1/8"L x 1 7/8"W


4 1/8" L x 1 7/8"W

Weight 2 oz | 350 grams
Low-Voltage Alarm Triggers When DC Voltage Drops Below 11.4V
High-Voltage Alarm Triggers When DC Voltage Rises Above 14.65V
Cable (Removable) 11'6' 4-Core
Power Supply 8Vdc - 15Vdc (Display Range Only : 11.4V - 14.2V)
Power Consumption (Average) 35mA
Power Consumption (Max) 40mA
Power Consumption (Sleep Mode) 8mA