The National Luna Double Battery Controller is perfect for monitoring 2 lead-acid batteries in a single installation for example dual-battery systems in 4x4's and campers. One of the main features is the independent negative - allowing this specific model to be used in vehicles with 24V systems. The National Luna Double Battery Monitor is designed to combine with the National Luna split-charge systems (Intelligent Solenoid or Portable Power Pack) and it will allow users to over-ride the split-charge system's built-in timer, which is useful for assistance when the main battery is too low.

• Simple installation
• 2 individual battery displays
• Excessive discharge warning
• Over-charge warning
• Polarity protected
• Extremely low power consumption
• 11.4V to 15V operation (ideal for automotive use)
• Programmed for non-linear lead-acid battery characteristics
• Audible alarm as standard (can be muted)
• Display on/off feature (Sleep mode)
• Recessed version available for panel-mounting