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Dual Battery Isolator


$179.00 inc GST

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The National Luna Intelligent solenoid has been designed to be a compact, automatic, parallel split-charge isolator for motor vehicles. The product features intelligent control electronics and a low-loss, high-current solenoid rated for extreme environments. Unlike some simple Voltage Sensing Relays (VSR's), this unit uses programmed timed phases to monitor the stability of the voltage before and after connecting the auxiliary battery into the charge circuit.  This provides alternator protection against overloading.

Installing the Intelligent solenoid is simple and can "piggy-back" off the vehicle's main battery without any ignition "tapping", ensuring that existing vehicle wiring is not tampered with.

The Intelligent Solenoid is supplied as a fully-functional split-charge isolator, no cables, batteries or other hardware is supplied. Battery monitor, lugs, cables and batteries are available separately..



  • Simple installation
  • Low-loss solenoid
  • Automatic connection and isolation
  • Plug-in port for remote monitor
  • No ignition wiring necessary
  • Alternator over-load protection
  • Removed battery protection
  • Damaged battery protection
  • Short-circuit protection
  • Can be installed in trailers or caravans
Physical size 130mm (l) x 115mm (w) x 75mm (h)
Weight 580g (Excluding connections)
Power supply 8Vdc - 15Vdc (display range: 11.4V - 14.2V)
Switched current 85 amp (continuous) , 400 amp (peak)
Power consumption
40mA ave (standby)
780mA max (solenoid engaged)

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