The exclusive 12V DC 100A microprocessor-controlled REDARC Redarc smart battery isolator Adelaide functions with power-saving technology. This dual-battery isolator is designed to protect the start battery from the extreme transmission. Moreover, the isolator also supports the additional battery to supply charge to non-essential loads. The Smart Start SBI12 dual-battery isolator is primarily used in 4WD and commercial vehicles and operates as the solenoid priority system. In addition, the battery isolators also prevent the solenoid from producing high-voltage transients. Such dual-battery isolators can be set up with a premium-quality fuse kit and never have any voltage drop like the diode isolators. Pay a visit to saaeaustralia.com.au/product/redarc-battery-isolator-12v-100a