So that's the question. Right now I'm running jeep, 2 KC lights and winch in the factory battery. Next week I'll be adding 4 more KC light, power invertor and thinking about on-board air. I've been told I'll need to run a dual battery with an isolator. Is this true? If so do I need to replace both batteries or can I just get 1 and continue to use my factory as well?
Whats the best batteries to look for?
What's the best isolator?
Anything else I should be looking at?

Thanks for the help

 

Its crazy that no one has ever started a thread about this...weird

Simple answer, regardless of mods, if you wheel go duals

 

Get a tray from Rugged Ridge, a Cole Hersee smart isolator, and two Sears Die Hard Marine Platinum batteries plus the necessary wiring. I've always read that you shouldn't really mix an old battery with a new one in a two battery setup, but I don't know enough about batteries to tell you why.

PS: search around in the electrical section of the forum and you will find some threads on this topic.