Dual battery install

[David Paul]

Im looking to add a second battery to my 04 Tahoe. I have the second battery mount but looking for the best controller. Not looking for a manual switch and don't want to just hook them up in pairs. I'd like the batteries isolated and like the Painless system, but I have trouble justifying $205 for the project.
What say you who have done this, what are my options?

 

[Martinjmpr]

I am actually in the middle of my dual battery project (what can I say, I work slow ) and I went with this:

https://www.amazon.com/gp/product/B001HBYXVS/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

Stinger 200a isolator. $40 on Amazon. Mine is mounted to the firewall on the passenger side using jack nuts and screws. I haven't got my 2nd battery yet but I'm leaning towards an X2 deep cycle group 34/78 that is rated to 68ah. Mine will be used primarily to run a refrigerator when we travel.

Once my dual battery setup is done I'll post a build thread with pics.

 

[David Paul]

Good afternoon Martin,
Thanks for the reply, funny thing is I went with the same isolator from Amazon, came today......lol.

 

[Tonyrodz]

Good afternoon Martin,
Thanks for the reply, funny thing is I went with the same isolator from Amazon, came today......lol.

Def need some pics on the install .

 

[OhFourChevy]

A "how-to" or a guide on how you did it would be killer!

 

[Martinjmpr]

Yeah I'll do a full writeup. Although I basically copied a guy from http://www.expeditionportal.com anyway.