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M looking at a dual set up. '09 2 door JK w rugged ridge snorkel, cobra 75 all in one CB, on board air compressor, and Q9000 winch. Off road lights in future. I think that covers all the stuff. Question is, what would be the best set up. Other threads are confusing me. Isolate 1 battery for starter, other stuff on 2nd battery? Or run both together? Also, anyone using T-max 47-3800 dual battery system to isolate? Seems like an interesting system. Any input is appreciated. Do I have to run 2 identical batteries? RR makes a battery tray they say will fit w their snorkel. Thanks dudes and dudettes (0|||||||0)
 

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I use a ML-ACR (500a Magnetic Latch Automatic Charging Relay) for my 2 battery setups. It combines batteries for charging, isolates during discharge, and has a combine mode. This way the second battery can be used for high draw items separate from starting. Highly recommended.
 

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Optimally you should for best battery life, although at a minimum they should both be the same type, i.e. 2 agm or 2 lead acid.
 
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