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After 180,000 miles and almost 8 years of service, I replaced the 12 volt.

Discussion in 'Gen 2 Prius Fuel Economy' started by ozarkretiree, Dec 14, 2014.

  1. Graz

    Graz Member

    Joined:
    Feb 22, 2005
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    Location:
    San Diego, CA
    Vehicle:
    2005 Prius
    Model:
    III
    I am on my second Yellow Top. The "Smart Key System" has proven to be a drain on this circuit. I have also noticed better mileage after replacing the 12v ACC battery. i assumed it was because the car was using the mecanics and the power battery to charge a faulty battery.
     
  2. Britprius

    Britprius Senior Member

    Joined:
    Jun 14, 2010
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    Location:
    Herefordshire England
    Vehicle:
    2008 Prius
    The problem with the yellow top compared to most other Prius fit, and OEM batteries is it's reduced capacity about 18%. Over the last couple of years there have been a number of reports of faulty or low level of charge new yellow top batteries.

    John (Britprius)