Prius Plus/Alpha Li-ion Battery Busbar Cleaning

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by Ohid, Jul 23, 2021.

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  1. Ohid

    Ohid Junior Member

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    I want to clean my Prius Alpha Li-ion battery Bus bars and connectors cleaning. Does anyone in this group do cleaning of corrosion of Li-ion battery bus bar and connectors. Want to know the details of opening the Battery covers and cleaning process since its construction is little different than Nimh battery. A video will be very helpful. TIA.
     
    #1 Ohid, Jul 23, 2021
  2. Tim Jones

    Tim Jones Senior Member

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    Have you tried you tube? Countless prius videos there
     
    #2 Tim Jones, Jul 23, 2021
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  3. Ohid

    Ohid Junior Member

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    I searched google but no luck. Most of the videos made for Nimh battery but my one is Li-ion battery.
     
    #3 Ohid, Jul 24, 2021
  4. Tim Jones

    Tim Jones Senior Member

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    Do they look the same?
    Are the connections similar?
    Do you have a picture?
     
    #4 Tim Jones, Jul 24, 2021
  5. Ohid

    Ohid Junior Member

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    FB_IMG_1627143393219.jpg FB_IMG_1627143407244.jpg FB_IMG_1627143401546.jpg
    Post here Battery pictures with its duct, bus bar and connectors. Each block containing 7 cells. Total 8 blocks with 56 cells.

    This Battery pack placed under center console Between two front seats.
     
    #5 Ohid, Jul 24, 2021
  6. Tim Jones

    Tim Jones Senior Member

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    Did you get a new battery or just decide to clean the terminals?
     
    #6 Tim Jones, Jul 24, 2021
  7. Ohid

    Ohid Junior Member

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    Just clean the terminals for preventive maintenance.
     
    #7 Ohid, Jul 25, 2021
  8. Tim Jones

    Tim Jones Senior Member

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    They can look pretty nasty but I think most of the time cleaning them makes no difference.
    Probably the only time they really need cleaned is when you replace the battery.
     
    #8 Tim Jones, Jul 25, 2021
  9. Ohid

    Ohid Junior Member

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    Thanks for your answer. But many people suggests to do so to reduce internal resistance and temperature.
     
    #9 Ohid, Jul 25, 2021
  10. Tim Jones

    Tim Jones Senior Member

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    Guess so...but I did it at 2000,000 miles and made no difference in any voltage readings. I did get new bus bars when I replaced the traction battery.
    Just because the bars look dirty doesn't affect the internal resistance of the bar.
    Best on these is to just leave them alone till you get a new traction battery.
     
    #10 Tim Jones, Jul 25, 2021
  11. Ohid

    Ohid Junior Member

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    Is there any impact on
    Internal resistance and temperature after cleaning?
     
    #11 Ohid, Jul 25, 2021
  12. Tim Jones

    Tim Jones Senior Member

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    As long as the copper is clean where it connects to the battery terminals is all that matters.
     
    #12 Tim Jones, Jul 25, 2021
  13. Ohid

    Ohid Junior Member

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    This copper is rusted as well as bolts and connectors are corroded should not impedes the current flow?
     
    #13 Ohid, Jul 25, 2021
  14. Tim Jones

    Tim Jones Senior Member

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    It only matters where the copper touches the battery. The circle that is clean....
     
    #14 Tim Jones, Jul 25, 2021
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