New production OEM primearth modules question?

Discussion in 'Gen 3 Prius Technical Discussion' started by Spaminacan, Aug 14, 2025 at 7:07 PM.

  1. Spaminacan

    Spaminacan New Member

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    Hello I am going to pick up a new hybrid battery from Toyota for a 2014 Prius.
    I have used the OEM packs for second generation repair in the past. I was wondering if there is any difference in the modules the put in the gen 2 and gen 3. I'm aware of the case and connection differences but are they using the same primearth modules for both versions?
    Why not use a gen 3 pack? A $500 difference for 28 modules, so I'd like to know if there is any good reason to pay the extra money. I've rebuilt several traction batteries so a module swap to different case is not an issue.
    Thank you
     
    #1 Spaminacan, Aug 14, 2025 at 7:07 PM
  2. Tombukt2

    Tombukt2 Senior Member

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    Modules same but in gen3 case you get parts you do not in gen2. If not plug in same thru at least 16 I believe .
     
    #2 Tombukt2, Aug 14, 2025 at 9:03 PM
  3. Tombukt2

    Tombukt2 Senior Member

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    You'd be able to lv bus bars etc undo the I do t know how many tee niny screws on bottom tray and lift racked assembly .
     
    #3 Tombukt2, Aug 14, 2025 at 9:06 PM
  4. Spaminacan

    Spaminacan New Member

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    Thanks, If the modules are exactly the same, stripping and replacing the old modules+bus bars with new takes about 30 minutes, well worth the the savings.
     
    #4 Spaminacan, Aug 15, 2025 at 2:07 AM
  5. Tombukt2

    Tombukt2 Senior Member

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    I've never heard the modules called prime Earth but if that the Panasonic 200 volt DC prismatic modules 28 assembly then yeah . I was just saying if one of the batteries is way cheaper like that like the generation 2 you could just lift the rack of 28 modules all with the bus bar still intact and the squeezer rods still on
     
    #5 Tombukt2, Aug 15, 2025 at 2:33 PM
  6. PriusTech

    PriusTech Member

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    modules are the same
     
    #6 PriusTech, Aug 15, 2025 at 3:20 PM
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