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Worth a rebuilt hybrid battery?

Discussion in 'Gen 2 Prius Technical Discussion' started by Louis Horvath, Aug 9, 2022.

  1. Louis Horvath

    Louis Horvath Junior Member

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    I'm waiting for a torque wrench by the mail. Found a nice one for 50$ C
    Had to sell my other kidney but hey, I loves my car (just kidding about the kidney)
    Thanks for the headsup.
     
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  2. Louis Horvath

    Louis Horvath Junior Member

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    I'm waiting for a torque wrench by the mail. Found a nice one for 50$ C (for once I'm not going for the cheapest possible LOL)
    Had to sell my other kidney but hey, I loves my car (just kidding about the kidney)
    Thanks for the headsup.
     
  3. Louis Horvath

    Louis Horvath Junior Member

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    I don't know if it's going to make it but at 500,000 km I'll give my lovely Prius a vacation! Only 110,000 km to go!
     
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  4. Louis Horvath

    Louis Horvath Junior Member

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    I'm going to get some gas today. We'll see how she goes.
    Yesterday I let the car charge the battery and it didn't go beyond three bars.
    There's a LOT of hills where I live so the car will have a good chance to charge later on.
     
  5. rjparker

    rjparker Tu Humilde Sirviente

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    Forced charge or idle charge?
     
  6. Another

    Another Senior Member

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  7. Louis Horvath

    Louis Horvath Junior Member

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    Thanks!
    I was told Tekton made nice middle-of-the-road torque wrenches and I picked 3/8 instead of 1/4 (I have a full set of sockets I had to buy since I didn't have metric ones)
    There's an Amazon one for 36$ but for once I'm not going for the el-cheapo model :)
     
  8. Louis Horvath

    Louis Horvath Junior Member

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    Good news.
    Just came back from the gas station. Charge went up to eight bars! (out of ten).
    I'm assuming getting proper bolts and torquing them properly will help.
    Thank you so much to all of you - it's been a learning experience!
    Note : more respect for mechanics than ever! It's a tough job!
     
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  9. rjparker

    rjparker Tu Humilde Sirviente

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    Sounds normal.
     
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  10. alftoy

    alftoy Senior Member

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    Tekton lowest setting 10 ft/lbs = 120 inch/lbs, bus bar nuts require 48 in/lbs

    I went for the EP Auto 1/4 inch. Don't think the 3/8 will be low enough. I have both, better to use the 1/4.
    Interesting tool I found. | PriusChat

    Torque wrench conversion method. Tekton 10 ft/lbs minimum = 120 inch/lbs
    If you want to convert inch-lbs to foot-lbs, you take the inch-lb number and divide it by 12. Likewise, if you want to convert foot-lbs to inch-lbs, you simply take the foot-lb number and multiply it by 12.
     
    #50 alftoy, Sep 8, 2022
    Last edited: Sep 8, 2022
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  11. Louis Horvath

    Louis Horvath Junior Member

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    Thanks!
     
  12. Louis Horvath

    Louis Horvath Junior Member

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    I've never used a tork wrench before. Today while trying on my old batteries I immediately broke the battery terminal. I was surprised by the little amount of effort it took to break it. Didn't hear it click, didn't feel anything. I initially put the bolt in manually and turned it with my fingers until I couldn't.
    As mentionned by @alftoy , I had the wrench set to 48 in/lbs.
    Is this a fluke?
     
  13. alftoy

    alftoy Senior Member

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    Curious if you have a pic of the torque setting on your wrench.
     
  14. Louis Horvath

    Louis Horvath Junior Member

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    I will get you a picture tonight but essentially, the center column was at 45 and the ring at around 2.
    I was told by the instructions to put back the wrench to it's original settings if I'm not using it.
    I really took my time to do this so I doubt it's user error.
    I'm going to test with a bigger bolt and lower torque settings. Torque wrench bought new and looks new.
     
  15. rjparker

    rjparker Tu Humilde Sirviente

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    Probably was set 48 ft/lbs. A huge increase in force.
     
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  16. rjparker

    rjparker Tu Humilde Sirviente

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    48 inch pounds equals 4 foot pounds. If you are using a conventional torque wrench it is marked in foot pounds. Therefore you would have to set it at four ft/lbs. It is likely to be inaccurate at the low end leading to too much force. At least 12 times too much force. Big torque wrenchs like you have are designed for serious force like head bolts and wheel lugs.

    Normally electrical connections use much smaller torque screwdrivers or very small torque wrenchs calibrated for inch pounds.

    DEDE67E9-0B2F-4FA7-A138-3F5468808B24.jpeg

    Newton meters are the metric equivalent. Do not use that scale when you are given inch ponds or foot pounds.
     
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  17. Louis Horvath

    Louis Horvath Junior Member

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    You were right. Here's the picture.
    Since this doesn't go below 10 ft -lb. I'm guessing this tool is too strong?

    306766605_3310090932591837_8458126254582048553_n.jpg
     
  18. rjparker

    rjparker Tu Humilde Sirviente

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    Yes it is WAY too strong. Strong enough to break bolts. You were probably good when you tightened them by hand without a torque wrench. Technically almost every electrical screw or bolt has a torque setting. Wall outlets and circuit breakers in your house are examples. The reality is you will rarely if ever see a licensed electrician torque house wiring connections. If you have the right tool and you are doing the job the first time, yes, use a torque screwdriver or inch pound torque wrench. Not sure I would take a working battery assembly out just to check the torque.
     
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  19. Louis Horvath

    Louis Horvath Junior Member

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    Thanks a lot I really appreciate the help.
    12x the strength is quite a difference!
    As it stands, my car's mileage is around 6 liters / 100kms which is too high. I was hoping getting the torque just right would make that better - I've got two bolts that clearly aren't tight enough since I was using generic #5 bolts of dubious quality.
    This week I finally got a pack of 50 proper #5 bolts with a flange. Should be good to go.
    I'll update you as soon as it's done.
    Even if my mileage doesn't get any better it's still better than no car at all :)
     
  20. Louis Horvath

    Louis Horvath Junior Member

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    At 17 years of age, every day I get out of my Prius is a bonus!
     
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