Replace Hybrid Battery

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Swayde96, Aug 13, 2021.

  1. Swayde96

    Swayde96 Junior Member

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    I have a 2010 Prius that has set the fault P0A80 3 separate times in the last month. First two times happened 4 weeks away, last time happened 2 days apart. I pulled the freeze frame data and found one cell is registering slightly low. All cells reads 14.45V and cell 8 read 12V. Can anyone tell me if this cell is likely the cause.


    iPhone ?
     
  2. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Someone that actually knows what they’re talking about should be here shortly, but in the interim:

    That voltage difference is massive.
     
  3. ChapmanF

    ChapmanF Senior Member

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    Little nomenclature bit while we wait: those voltage measurements are per block. Block 8 is 12 volts. In an OEM-style battery, each block is two modules, each module 6 cells.

    One NiMH cell is nominally 1.2 volts. So a block of twelve cells should be nominally 14.4 volts. That's what most of your blocks are. As Mendel said, block 8 is really, really low.
     
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