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2001 thru 2003 12 volt Aux Battery Replacement

Discussion in 'Generation 1 Prius Discussion' started by LEVE, Aug 19, 2013.

  1. LEVE

    LEVE Member

    Joined:
    Jan 15, 2010
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    Location:
    On the Willapa
    Vehicle:
    2005 Prius
    Model:
    N/A
    Just a little information. I just replaced the OEM dead battery (shorted) with one from WalMart. It's a 26R-3. The case size, as well as the terminals are a good fit for the OEM battery. It is NOT, however, a sealed battery. But... it works. ;)

    Just an update. The battery has been installed for a few days. Now I can easily confirm that when the battery is dying the MPG decreases. I did have two clues before the battery death. The clock time was wiped out and I didn't notice it at once.

    The second clue was a failure to start problem throwing a CEL. It cleared itself.

    The MPG before the death of the battery was about 45mpg. Now, the MPG has raised to 50 to 51mpg. I'm pleased....