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  1. #1

    Default I'm thinking of adding a second battery.

    My 2011 already has the second battery tray in place. I was thinking about adding a second battery to run electrical stuff. Has anyone done this yet?


  2. #2


    I've done it on my '08. Look in this thread and I described a little how I did it. Sorry, no pics still. If you search on here I'm sure you will find a few others who have done it too.

    2008 Silverado 1500 LT 5.3L Crew Cab
    Desert Brown Metallic

    Century top, Yakima roof rack, 2.5" front lift, Readylift 3" rear blocks, Line-x bedliner, step bars, AVS vent visors, Weathertech floor liners, door sill guards, power tailgate lock, tailgate damper, KC light bar w/ PIAA 525s, rear mini-light bar, rear LED reverse/utility lights, dual batteries (Cole Hersee isolator), DIC upgrade, 20" GM wheels, Cooper Discoverer A/T3s, 26 gal. onboard air (twin Viair 480Cs), Nathan Airchime K3HA / Old cast 2nd Gen. P3 Horns, Graham White valve, bell

    Past Chevys: 1985 S-10, 1963 BelAir sedan

  3. #3


    There is a thread I saw last week with pictures of someone doing this in their suburban. I will look around and add the link if I can find it again.

    Found it!
    Last edited by FrigginNoodles; 03-16-2011 at 08:18 AM. Reason: Found it!
    "The best things in life aren't things"

    2007 Chevy Silverado Classic 1500
    Ext Cab 4wd LT
    Check out my garage

  4. #4


    I have done it both way with a batter isolator and without one. I have two in my s10 without a isolator, ran off the front battery and it works fine. I have it fuse at both ends.

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