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12v power outlets on 2012 Cascadia

Discussion in 'Freightliner Forum' started by marat80, Dec 2, 2018.

  1. Dec 2, 2018 #1
    marat80

    marat80 Bobtail Member

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    May 9, 2017
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    Hi! When the truck is off, the voltage drops in a few hours, usually at night, because of connected 12v cooler and 12v fridge to the rear outlets. When the voltage drops to 11v (the fridge has auto power off for that) it beeps and turns off all the rear power outlets in the sleeper. I noticed that after replacing all 4 batteries, now all brand new. Before, when I had 1 dead and 3 bad batteries, it didn't beep and auto turn off the outlets, just had a low voltage in the morning.
    How should be correct?
    When the engine is running, everything is working good. It means all fuses are good?
     
    Last edited: Dec 2, 2018
    marat80, Dec 2, 2018
    marat80, Dec 2, 2018
    #1
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  3. Dec 2, 2018 #2
    Buckeye 60

    Buckeye 60 Road Train Member

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    sounds like you got the cheap batteries and if you have a cooler and fridge it doesn't take long to drain the batteries enough to start shutting down I have the better batteries in mine and power stays on for at least 24 hours but I don't have as much as you do . I was a little hesitant to spend that much on batteries about double the cost but they are 3 and a half years old and still good
     
    Buckeye 60, Dec 2, 2018
    Buckeye 60, Dec 2, 2018
    #2
  4. Dec 2, 2018 #3
    marat80

    marat80 Bobtail Member

    38
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    May 9, 2017
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    Interstate Batteries 31-MHD 950 CCA
    Bought at Freightliner Dealership.
    Is it cheap brand?
    Shutting down is normal process on Cascadia when the voltage is less than 11 v?
    I've never seen it before.
     
    marat80, Dec 2, 2018
    marat80, Dec 2, 2018
    #3
  5. Dec 2, 2018 #4
    Buckeye 60

    Buckeye 60 Road Train Member

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    not sure on those batteries . but it is normal for that truck to conserve power for starting . mine used to do it with the other batteries in colder weather ... doesn't happen with these batteries. I think your options would be to unplug something or start the truck up during the night should only have to run it 15 minutes or so .. don't think I would change batteries just when those are wore out
     
    Buckeye 60, Dec 2, 2018
    Buckeye 60, Dec 2, 2018
    #4
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