12V Battery Replacement Recommendation

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by Tonydavid, Jan 8, 2021.

  1. WiredKnight

    WiredKnight New Member

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    It’s 2025, but just wanted to let anyone who might need it, Amazon has OBDII memory savers that hook into OBDII and a 9v transistor battery for ~17 dollars. Search using this on Amazon:
    9V Battery Powered Memory Saver for Car Battery Fit for All OBD ll 16-Pin Interface
     
  2. indel

    indel Member

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    So you attach this device to the obd2 port while you are changing out the 12V battery? Would it not create excessive charge briefly when both the battery and this device are connected? Is that ok?
     
  3. ChapmanF

    ChapmanF Senior Member

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    It doesn't: voltage sources in parallel do not add. 12 volts ∥ 12 volts = 12 volts.
     
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  4. Mendel Leisk

    Mendel Leisk MMX GEN III

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  5. indel

    indel Member

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    Speaking of 12V chargers, has anyone used this Bosch charger?