Suppliers of quality power products for the 4x4 and Outdoor Enthusiast

National Luna dual battery monitor


The simplest and cheapest way to monitor your dual battery system???s state of charge is to use this dual monitor from National Luna.

SKU: BMN-NL-D Categories: ,


National Luna Dual Battery Monitors are ideal for monitoring 2 lead-acid batteries in a single installation such as dual-battery systems in 4x4s and campers. The digital technology used in the dual monitors allows the non-linear characteristics of lead-acid batteries to be accurately followed.

A feature of one of the National Luna dual battery monitors is the independent negative – allowing this particular model to be used in vehicles with 24V systems. Dual battery monitors can be used independently, or in combination with any dual-battery system.


  • Simple installation
  • 2 individual battery displays
  • High-accuracy digital technology
  • 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 option (sleep mode)