1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Gen 4 cells in a Gen 2

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by TampaPrius.com, Jan 16, 2017.

  1. dingaling007

    dingaling007 Junior Member

    Joined:
    Jun 19, 2018
    38
    14
    0
    Location:
    Australia
    Vehicle:
    2008 Prius
    Model:
    i-Tech
    Good advice thanks, do it right the first time as they say. Will order a wire frame #2 in that case.
     
  2. Donald Russell

    Donald Russell Junior Member

    Joined:
    Nov 15, 2021
    3
    0
    0
    Location:
    uSA
    Vehicle:
    2007 Prius
    Model:
    Base
    I've got an 07 Gen 2 that has several bad cells. I would like to put cells a Gthe from28 cells from a Gen 4 in the 07. Have been reading some of these articles. My question is if I go to a junkyard or call them how do I know which Gen 4 has NIMH batteries?
     
  3. nancytheprius

    nancytheprius Active Member

    Joined:
    Oct 25, 2020
    356
    152
    0
    Location:
    iowa
    Vehicle:
    2006 Prius
    Model:
    II
    where are places that I can go about finding wrecked gen 4 nimh batteries to put in my gen 2? My hv battery is operational and I am confident that it still has some life in it. It is original tho, and I would definitely change the battery before failing if I was able to find one of these. (if it made sense price wise in comparison to a new gen 2 battery from toyota) It seems to be difficult to locate them on my google searches, but I can keep it on my radar throughout the next several months. Any feedback would be appreciated.
     
  4. nancytheprius

    nancytheprius Active Member

    Joined:
    Oct 25, 2020
    356
    152
    0
    Location:
    iowa
    Vehicle:
    2006 Prius
    Model:
    II
    The two quotes below are ways to determine it is NiMh:

     
  5. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    11,518
    14,128
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius
    Model:
    Two
    As quoted above, the Lithium batteries are much lighter. NiMH in a Gen 2 is over 80 pounds. Not sure of the Lithium, but it's substantially lighter.

    Also, you can look up the brochures. As I recall, the regular trim 2 (not the ECO 2) was NiMH for the first several years and all others were Lithium. Now the AWD version is the only one with NiMH.

    For example:
    2016 brochure:
    2016.png

    2019 brochure:
    2019.png
     
  6. TMR-JWAP

    TMR-JWAP Senior Member

    Joined:
    Aug 12, 2016
    6,404
    6,062
    0
    Location:
    Columbia, SC
    Vehicle:
    2007 Prius
    Model:
    Touring
    jerrymildred likes this.
  7. nancytheprius

    nancytheprius Active Member

    Joined:
    Oct 25, 2020
    356
    152
    0
    Location:
    iowa
    Vehicle:
    2006 Prius
    Model:
    II
    mr_guy_mann likes this.
  8. Prodigyplace

    Prodigyplace 2025 Camry XLE FWD

    Joined:
    Nov 1, 2016
    11,801
    11,362
    0
    Location:
    Central Virginia
    Vehicle:
    Other Hybrid
    Model:
    XLE
    Trim Two ( NOT Two Eco) and, I think, Trim One from late 2017 onward.
     
  9. NotForTheBurnouts

    NotForTheBurnouts New Member

    Joined:
    May 15, 2022
    7
    1
    0
    Location:
    Canada
    Vehicle:
    2011 Prius
    Model:
    Base
    Hi. Is the Prius V considered a Gen 3? Are the NiMH cells interchangeable with a Prius V?
     
  10. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    11,518
    14,128
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius
    Model:
    Two
    The v is very gen 3. The hybrid batteries are interchangeable although I read somewhere that the 7-seat v uses Lithium.
     
    NotForTheBurnouts likes this.
  11. mjoo

    mjoo Senior Member

    Joined:
    Nov 9, 2016
    1,134
    1,324
    12
    Location:
    Michigan
    Vehicle:
    2010 Prius
    Model:
    III
    I just bought a hybrid battery pack out of a 2017 Level 2.

    Has anyone installed one into a gen3? I'm wondering if the Gen 4 voltage sensor harness (a.k.a "wire frame #2" but for Gen3) is plug and play in Gen 3? I cannot find a new harness online to purchase.
     
  12. TMR-JWAP

    TMR-JWAP Senior Member

    Joined:
    Aug 12, 2016
    6,404
    6,062
    0
    Location:
    Columbia, SC
    Vehicle:
    2007 Prius
    Model:
    Touring
    This is actually a really good question. I have a Gen 3 harness that was removed from a new Toyota Gen 3 HV battery. I also have a handful of Gen 4 harnesses. I think I need to put them side by side and see how they look.
     
    mjoo likes this.
  13. TMR-JWAP

    TMR-JWAP Senior Member

    Joined:
    Aug 12, 2016
    6,404
    6,062
    0
    Location:
    Columbia, SC
    Vehicle:
    2007 Prius
    Model:
    Touring
    The gen 3 and gen 4 are not identical. The 2018 harness I just checked only has 10 sensing points/10 wires.
     
    mjoo likes this.
  14. mjoo

    mjoo Senior Member

    Joined:
    Nov 9, 2016
    1,134
    1,324
    12
    Location:
    Michigan
    Vehicle:
    2010 Prius
    Model:
    III
    Ok thanks! They look almost identical.

    This gives me a good reason to buy a spare harness and prep it.
     
    #114 mjoo, Aug 14, 2022
    Last edited: Aug 14, 2022