ADVENTURE TRAVEL ENTHUSIASTS DEDICATED TO OVERLAND EXPLORATION
Any members have advice on installing a secondary battery , battery type etc.. ?
Also what type of battery combiner would you recommend ? Primarily to run a fridge / freezer .
I am in the process of doing a second as an accy batt. I dont plan to use for cranking, just air comp, lights etc. My second is a GRP27 deep cycle. I am not sure yet what I will be doing for charging system yet. Thinking of the KISS. A constant duty solenoid with ignition switch on off switch, and wired to vehicle charging system. Fused of course.Thoughts? I have heard where isolators lower voltage and don't like that idea.
I have a Wirthco battery doctor automatic isolator. Works great. Pretty inexpensive too
I stopped by today to ask the same question.
I heard the once leading Optima has declined in quality (manufacturing moved to Mexico, apparently).
I wouldn't buy an optima anymore. Odyssey or north star if you want agm. I just have an interstate flooded battery and they work great.
I am referring to one start and one house battery .
Dan , are you running a single Optima Yellow Top battery ?
@Peter Bolay , yes sir. I have had zero issues with my Optima Yellow Top since 2013. That's when I bought my first one. I have drained them all the way down to nothing and they come back to full life, every time. Just my experience. Hope others have had similar ones.
Yeah, I have not had any real issues with my single Optima, but I guess it would be nice to not drain it when sitting for multiple days.
A single group 31 is just about the same capacity of 2 24s
@Aaron Kravik do you mean dual house batteries or separate start/house? I'm assuming 'duals' means one starter and one house.
If I were to do it over, I'd do one large battery instead of duals. Currently have dual 24s.
@Aaron Kravik I'd like to hear what the downsides are. Thoughts?
@Jim Weller additional complexity/failure points. Capacity of 2 24s is only marginally more than a single 31. Less weight and less cost over the long run.
Thanks Dan for the fast response . Currently reading the how to article . I have a Land Rover LR3 and it comes with 2 battery boxes because of them building both left and right hand steering vehicles . Should make the job a lot easier . I think I will probably go with an AGM battery and use a Magnum Smart Battery Combiner ME-SBC . Fisheries Supply in Seattle sells the Magnum line and I have used their inverters in boating applications. Thanks again , Peter Bolay
Here is a pretty simple step by step for a dual battery install. I guess it depends on how much space you have to work with, personal preferences on battery makes and what your load will be. I am running a single Optima Yellow Top for all my accessories, but I know that soon, I will be entering the dual battery realm. Let us know what you are planning!
Dan, Great article. Thanks for posting.
@Jim Weller My pleasure, Jim!
@Dan Cronin Is that an oil filter to the left of the batteries? On top of the engine?