Re: Aussie dual battery connection
You don't say which battery isolator you have. Many battery isolators disconnect the auxilary battery when they detect that the starting battery is no longer being charged by the alternator. This should do what you want allowing you to connect the isolator direct to the battery which is far better considering you may be drawing 20A. Your Redarc battery charger is a DC-DC charger so I'm guessing you are feeding it from the isolator to charge an auxillary battery in a trailer. Remember you have either a 180A or 220A alternator so why waist that potential capacity.
Ordered 9 Nov 2011 - Delivered 3:30pm Friday 13 April 2012
Jeep Grand Cherokee Laredo 3L CRD, Black Forest Green Pearl, Quadra-lift, Off-road Adventure II, Front Recovery Hook, Mopar Tow Bar, Mopar Rock Rails, 150A Projecta Battery Isolator, Tekonsha P3 Brake Controller, Bridgestone D697 265/60R18 LT, Kimberley Kamper Special Edition
MudMap M7 off/on road sat nav, Chief front recovery hooks "chrome", Chief 3mm bash plate