Battery module serial numbers removed

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by JohnPrius3005, Mar 27, 2021.

  1. JohnPrius3005

    JohnPrius3005 Active Member

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    Greetings all,

    PriusChat has been an incredible, invaluable source of information and inspiration to me. Thank you all.

    As part of my work on my 4 Priuses I'm doubtless going to be replacing HV battery modules. In my search for good modules I've come across a seller who is offering "excellent" modules, but "the serial numbers have been removed". Call me cynical, but I can't think of a legitimate reason why someone (not this seller, his supplier) would remove serial numbers. Can anyone please enlighten me?

    Further to this, from reading various threads his morning trying to find if this topic had already been addressed, I learned that Gen 4 modules can be used in Gen 2 battery rebuilds. This is awesome information. So those are what I'll be trying to find.

    Which raises the next question. Does anyone know of, and is willing to share, a source of good modules - from low mileage, recent vintage compatible vehicles? I'm in San Diego and it appears that the southern California auto wrecking business has fully realized the value of good modules and/or batteries and is selling them prior to wrecks reaching the junkyard.

    Thanks so much. I'm not looking to get into the battery refurbishment business, just to get my cars up and running well.
     
  2. TMR-JWAP

    TMR-JWAP Senior Member

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    John,

    If you're looking to replace all 28 modules to freshen the battery, then Gen 4 is the way to go. If you're looking to just replace a couple modules, it's not the way to go. The gen 4 module characteristics would likely be so different from the remaining original modules that it would make the car think you have bad modules when you really don't. If you're looking to purchase an entire Gen 4 battery, look at http://www.car-part.com and just do a search for 2017 Prius battery NiMH, not Lithium. If you're in CA, there are plenty available. not so much in HI.

    If you're looking for individual high quality modules for your date range, I can help you with that, if desired.
     
    #2 TMR-JWAP, Mar 27, 2021
    Last edited: Mar 27, 2021
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  3. Albert Barbuto

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    Removed serial #'s..... Run as fast as you can away...

    I did replace my pack with Gen 4 modules, from a wreck. $1k out the door. :)
     
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  4. TMR-JWAP

    TMR-JWAP Senior Member

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    I agree with this. Most likely, if the numbers are really removed, it's because they're trying to hide the manufacture date of the module.

    On the other hand, I have plenty of modules where the 'white' color of the serial numbers has faded, but you can still read them by holding the module at different angles in the light. I've never had a module that couldn't have the serial number read using light, angles, magnifying glass or some combination of the three .

    I'm pretty sure actual removal of the serial number would require damage to the case.
     
  5. JohnPrius3005

    JohnPrius3005 Active Member

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    Thank you both so much.

    TMR thanks for all the good info. As I dig into my batteries I may well contact you for modules.

    Aloha
     
  6. pasadena_commut

    pasadena_commut Active Member

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    The closest to SoCal as of right now is in Arizona. The search found none in CA at all. Also these run around $1200 before shipping, whereas a cursory search turns up a brand new one at Tustin Toyota (about 40 miles from me) for $1729.26. Not sure what shipping would be but guessing around $100-200. So the used one is 30% cheaper, but has no warranty.
     
  7. JohnPrius3005

    JohnPrius3005 Active Member

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    Hi Pasadena,
    Thanks. Most interesting. I'm in Oceanside, San Diego, so Tustin Toyota is an easy drive - so no shipping. Seems like prices are coming down for these batteries.

    Right now I'm leaning to replacing cells only in my 2004 which is in CA. It has about 220,000 miles so it's not a prime candidate for "no serious maintenance required for 5 years!" I just picked up a second hand Dorman refurb battery off Craiglist so that might be a start. I have 2 Priuses in Hawaii which also need work, including battery work. One may be a candidate for replacing all 28 modules. It's a bit beaten up and corrosion on the islands is a huge issue, but it only has 86,000 miles.

    Just for grins I'm also looking into a Toyota Mirai!!
     
  8. TMR-JWAP

    TMR-JWAP Senior Member

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    That's odd, because my listing shows a 2017 NiMH available in San Diego for $850 from a 21k mile wreck.

    Bebos Auto Recycling stock #B2050 619-661-5595
     
  9. JohnPrius3005

    JohnPrius3005 Active Member

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    Thanks. I saw the listing too after you mentioned it. Emailed them. Good price!
     
  10. JohnPrius3005

    JohnPrius3005 Active Member

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    Hi TMR, Thanks again. When I finally reached Bebos he told me he sold it a few days ago. Nice guy, but it still shows up on car-part. I contacted some other junkyards about higher priced listings and they want the money and a core! I guess these batteries are valuable in CA...hahaha
     
  11. 2004priusgal

    2004priusgal Junior Member

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    what year was your car? would gen 4 work in a 2004?
     
  12. dolj

    dolj Senior Member

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    upload_2021-7-11_19-32-55.png
    As per his profile (above), he has a 2005.
    Yes, as long as they were NiMH and not Li-Ion.
     
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