Granted, you could do something similar with a set of jumper leads but for the sake of convenience and simplicity, this is a great function. This is useful if you inadvertently flatten the starter battery, you can use the auxiliary battery to start the engine. With the addition of a switch, you can manually override the system and connect the two batteries together. The REDARC SBI does exactly that.īut the battery isolatorhas a few tricks up its sleeve that I believe make it a stand-out product. You want the voltage in the starter battery to come up to 13 volts before it connects the auxiliary battery. Not a complicated task but one that does require some electrical wizardry to perform properly.įor instance, you don't want both batteries to be immediately connected as soon as the engine is switched on. Its job is simple - it isolates the auxiliary battery from the starter battery when the engine is off and to connect the two together so both can be recharged by the vehicle’s alternator. It is a very simple device in so much as its the sort of device you install and totally forget about. When we purchased the Landcruiser, we had it fitted with a REDARC 12 Volt 100 amp Smart Battery Isolator (SBI). To give you an example, over the years I've had 5 different types of dual battery isolators from as many manufacturers in my vehicles and they have all failed in one way or another, usually at times when we are in remote outback areas and could ill afford to be without 12 volt auxiliary power in the car. In fact I'm writing this off my own bat because, without a doubt, since we switched to Redarc, all of our 12v issues have pretty much disappeared to the point we now travel with complete confidence in all our 12 volt systems. No I'm not just saying that because I want to get on REDARC's good books. That is until I started using REDARC equipment. The 12 volt electrical systems have given me no end of trouble. One problem has been common to just about all of them. In that time I've had two camper trailers, two caravans and five 4wds. I've been travelling around this country in either a camper trailer or a caravan for over 25 years. Marty and Kylie from RVeeThereYet are no novices when it comes to caravanning around Australia - they've been doing it for over 25 years.
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