National Luna Dual Battery Monitors are ideal for monitoring 2 lead-acid batteries in a single installation such as dual-battery systems in 4x4's 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. The Dual battery controller is specifically designed to be combined with the National Luna split-charge systems (Intelligent Solenoid or Portable Power Pack). This model allows the user to over-ride the split-charge system's built-in timer, useful for winching or start assistance when the main battery is too low.Overview
![]()
Features | |
| ![]() |
| Specifications | |
|---|---|
| Physical size | 107mm (l) x 48mm (w) x 20mm (h) |
| Weight | 185g (dual monitor) 190g (dual controller, incl cable) |
| Power supply | 8Vdc - 15Vdc (display range: 11.4V - 14.2V) |
| Low-voltage warning | DC voltage below 11.4V |
| Over-charge warning | DC voltage above 14.65V |
| Cable | Dual monitor - Fixed 3.5 meter 4-core cable Dual Controller - Removeable 3.5 meter 4-core cable |
| Power consumption | 8mA (sleep mode-option) , 35mA Average |
| 40mA max | |



