why does Dr Prius app show only 14 modules when I thought there was 28?

Discussion in 'Gen 2 Prius Main Forum' started by Christophersavesgas, Apr 25, 2026.

  1. Christophersavesgas

    Christophersavesgas New Member

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    does each bar in the Dr Prius app equal two modules?
     
    #1 Christophersavesgas, Apr 25, 2026
  2. Hayslayer

    Hayslayer Active Member

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    Yes.
    There are 28 individual modules, each 7.2 volts nominal. Typical in use voltage 7.5-8.x volts.
    Each pair of modules forms a block, which is measured for overall voltage.
    There are 14 blocks, each consisting of 2 modules => nominal voltage 14.4 volts. Typical "in use" voltage 15-16.x volts
     
    #2 Hayslayer, Apr 26, 2026
    Brian1954 likes this.
  3. PriusCamper

    PriusCamper Senior Member

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    Yes... Unlike lithium that requires a voltage monitor for every cell for safety, NiMH cells in Prius don't have that level of risk so there's only a voltage monitor for every 12 cells, or every two modules.
     
    #3 PriusCamper, Apr 26, 2026
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