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12v Auxillary Battery Removal Question

Discussion in 'Gen 2 Prius Technical Discussion' started by tigiras, Jan 20, 2011.

  1. tigiras

    tigiras New Member

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    I'm trying to remove that 12V Aux Battery but there is a little tube that attaches from the side of the battery into the body (see pic). Anybody know what it is and how to detach it?
     

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    #1 tigiras, Jan 20, 2011
  2. Britprius

    Britprius Senior Member

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    Its just a vent to let gasses from the battery escape outside the car just pull to remove.
     
    #2 Britprius, Jan 20, 2011
  3. KK6PD

    KK6PD _ . _ . / _ _ . _

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    Just make sure you replace the plastic tube, it's does vent those smelly gasses, as well as hydrogen, which is generated as the battey is charged!
     
    #3 KK6PD, Jan 20, 2011
  4. pEEf

    pEEf Engineer - EV nut

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    Normally the vent does nothing. It's there in case of a fault that causes an overcharge. Normal charging does not vent anything, if it did, you'd be losing a lot of water!

    A fault could be DC/DC overvolt, or a shorted cell which would mean the remaining ones see too much voltage. In that case it would most definitely vent!
     
    #4 pEEf, Jan 20, 2011
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