Second battery?
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Cadillac Escalade, EXT and ESV Forum - 2007-2014 Discussion, Second battery? in Cadillac Escalade Forums; Hi Do i remember this right? The 2007+ can have a second battery connected? Many Thanks Ashley...
  1. #1
    SFX Group's Avatar
    SFX Group is offline Cadillac Owners Fanatic
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    FAQs and TECH Section

    Hi

    Do i remember this right? The 2007+ can have a second battery connected?

    Many Thanks
    Ashley

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    hcvone is offline Cadillac Owners 10000+ Posts
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    Re: Second battery?

    I have the dual battery setup in both 07's, it how the Police Tahoe's come from the factory. These are the parts you will need, one of each, plus a battery.
    25825642 Cable
    15888242 F Cable
    14005061 Retainer
    11509853 Screw

    These parts should cost you about $116.00, it looks stock and you will should never have another battery issue. I have schematics but you can not really see much, e-mail me at carl@hcvind.com and I will send them to you

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    403HP is offline Cadillac Owners Fanatic
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    Re: Second battery?

    Quote Originally Posted by hcvone View Post
    I have the dual battery setup in both 07's, it how the Police Tahoe's come from the factory. These are the parts you will need, one of each, plus a battery.
    25825642 Cable
    15888242 F Cable
    14005061 Retainer
    11509853 Screw

    These parts should cost you about $116.00, it looks stock and you will should never have another battery issue. I have schematics but you can not really see much, e-mail me at carl@hcvind.com and I will send them to you
    Are these GM part numbers?

  5. #4
    SFX Group's Avatar
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    Re: Second battery?

    I sort of assumed they where GM part numbers....

    Many Thanks
    Ashley

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    hcvone is offline Cadillac Owners 10000+ Posts
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    Re: Second battery?

    Quote Originally Posted by 403HP View Post
    Are these GM part numbers?
    Yes they are, got them from my Chevy dealer.

  7. #6
    SFX Group's Avatar
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    Re: Second battery?

    How long did it take you to fit?

    I assume there are harness support points on the chassic already?

    Does the standard alternator handle the extra charging needs? also the alternator lead not need to be upped due to the new second battery?

    Many Thanks
    Ashley

  8. #7
    hcvone is offline Cadillac Owners 10000+ Posts
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    Re: Second battery?

    The alternator does not get touched, the positive cable supports are there on the cross member (2) if I remember correctly, the negitive cable attaches to the bolt on the bracket below the alternator. It took about an hour total on a lift, the postitve cable connects to the starter. Not any problems in over a year, I also have 4 wax customers that have the same setup without any problems.

  9. #8
    LFTW8S is offline Cadillac Owners Fanatic
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    Re: Second battery?

    Quote Originally Posted by hcvone View Post
    The alternator does not get touched, the positive cable supports are there on the cross member (2) if I remember correctly, the negitive cable attaches to the bolt on the bracket below the alternator. It took about an hour total on a lift, the postitve cable connects to the starter. Not any problems in over a year, I also have 4 wax customers that have the same setup without any problems.
    I really want to get this set-up but have a question. how does the new batter stay charged if it does not connect to the altenator?

    Thanks in advance.

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    hcvone is offline Cadillac Owners 10000+ Posts
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    Re: Second battery?

    I was told that the second battery will stay charged by the first battery, they are connected at the starter, this is the same setup that the Police Tahoe's use. I just checked both batteries in both trucks, they are the same voltage with in .01.

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    Re: Second battery?

    Today my battery died on me at the car wash. can you imagine the feeling. The truck shiny and crystal clean, everybody was looking at the truck amazed, the guy there tells me the truck is ready, I turn the ignition on and OOOPs nothing happens.
    then a small Romanian old made car called DACIA with a 1.3 litre engine jump start my Truck , can you imagine the humility, man. after jump starting the truck the engine light stayed ON, till after I changed the battery . Now it is off.
    The I went to service shop that sells american parts to change the battery, when I was waiting there to have the battery installed, another 07 drove in to the shop to have the brake pads changed, some noise was coming out hie rear wheels.
    Sorry if I am getting off the subject here, but this was a complete surprise for me.
    when the technician took the rear wheel pads off, the right rear wheel inside pad was totaly worn and got to the metal and took a bit of the thikness of the disk, the rest of the pads were half life. the guy had only 17,000 miles on that truck , how come that only pad was totaly worn out ????
    Any how changed the battery and kept the old one to have the second battery installation done.

  12. #11
    Palomar9 is offline Cadillac Owners Fanatic
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    Re: Second battery?

    Don't feel bad. I'd say at least half of all surprise breakdowns I've ever had were due to battery failure. It's to the point where anything whatsoever starts acting strange with a vehicle, I check the battery first. Installing a new battery is about the cheapest thing you can fix on a vehicle yourself. If that does the trick, you got off easy!!

  13. #12
    hcvone is offline Cadillac Owners 10000+ Posts
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    Re: Second battery?

    Sounds like one pad was hanging up and caused it to wear out sooner, I hoped they checked the caliper to make surte it was not bent and causing the problem

  14. #13
    spankyca is offline Cadillac Owners Member
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    Re: Second battery?

    Quote Originally Posted by medlines View Post
    Today my battery died on me at the car wash. can you imagine the feeling. The truck shiny and crystal clean, everybody was looking at the truck amazed, the guy there tells me the truck is ready, I turn the ignition on and OOOPs nothing happens.
    then a small Romanian old made car called DACIA with a 1.3 litre engine jump start my Truck , can you imagine the humility, man. after jump starting the truck the engine light stayed ON, till after I changed the battery . Now it is off.
    The I went to service shop that sells american parts to change the battery, when I was waiting there to have the battery installed, another 07 drove in to the shop to have the brake pads changed, some noise was coming out hie rear wheels.
    Sorry if I am getting off the subject here, but this was a complete surprise for me.
    when the technician took the rear wheel pads off, the right rear wheel inside pad was totaly worn and got to the metal and took a bit of the thikness of the disk, the rest of the pads were half life. the guy had only 17,000 miles on that truck , how come that only pad was totaly worn out ????
    Any how changed the battery and kept the old one to have the second battery installation done.
    Out of curiosity but how come you did not go to the dealer for a new battery since the battery is covered by the factory warranty?

  15. #14
    SFX Group's Avatar
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    Re: Second battery?

    Quote Originally Posted by hcvone View Post
    Sounds like one pad was hanging up and caused it to wear out sooner, I hoped they checked the caliper to make surte it was not bent and causing the problem
    RED RUBBER GREASE there then

    good for all floating parts of a caliper, i know, in the UK go throw caliper parts like there bear metal due to corrosion.

    Me

  16. #15
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    Re: Second battery?

    Quote Originally Posted by spankyca View Post
    Out of curiosity but how come you did not go to the dealer for a new battery since the battery is covered by the factory warranty?
    AND i wouldnt be installing the dead battery as a second, will overheat the first one.
    Andrew224 and Cadillacman916 like this.

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