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12 volt Battery Manufacture Date

Discussion in 'Gen 3 Prius Technical Discussion' started by Borninblue, Feb 25, 2019.

  1. Borninblue

    Borninblue Active Member

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    From searching threads I thought the battery birth date was in MM/DD/YY. I looked at mine today, first number is 24? See attached.

    I bought the vehicle used few months ago, the owner said the battery had been replaced. If I am reading part of the battery right it, I believe it was made in 2011. So he failed to tell me he replaced it 8 years ago, silly me for not asking when or checking the date. Anyways I am probably due for one don’t you think?
     

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    #1 Borninblue, Feb 25, 2019
  2. bisco

    bisco cookie crumbler

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    looks like 12/24/11, can't be original?
     
    #2 bisco, Feb 25, 2019
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  3. Borninblue

    Borninblue Active Member

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    Vehicle is a 2010, so I was assuming it couldn’t be original. I guess if it is a late model 2010 it could be.
     
    #3 Borninblue, Feb 25, 2019
  4. bisco

    bisco cookie crumbler

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    how long have you owned it? a lot of 10's sat on the lot, and had to have the 12v replaced prematurely
     
    #4 bisco, Feb 25, 2019
  5. Borninblue

    Borninblue Active Member

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    About 3 months I have had her. I guess he outright lied to me, just not sure why he offered that information when I didn’t even ask about the 12v. I don’t have a digital meter, I’m thinking maybe I should just replace it.
     
    #5 Borninblue, Feb 25, 2019
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  6. bisco

    bisco cookie crumbler

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    i hope he didn't mean the hybrid battery
     
    #6 bisco, Feb 25, 2019
  7. MichaelKnight

    MichaelKnight Junior Member

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    hope this helps...
    Although it looks like you figured it out already....
     

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    #7 MichaelKnight, Feb 25, 2019
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  8. bisco

    bisco cookie crumbler

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    according to that, the year would be 1924 :cool:
     
    #8 bisco, Feb 25, 2019
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  9. Borninblue

    Borninblue Active Member

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    No, I specifically remember him saying “ I never replaced the big battery.” I know that to be true since I actually got back there shortly after I bought it it to clean the fan. It was filthy by the way.
     
    #9 Borninblue, Feb 26, 2019
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  10. MichaelKnight

    MichaelKnight Junior Member

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    Thats is why I should not post late lol....
     

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    #10 MichaelKnight, Feb 26, 2019
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  11. Borninblue

    Borninblue Active Member

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    Debating do I buy a load tester.....battery is already 7 years old whether it tests fine or not only matter of near future death no?
     
    #11 Borninblue, Feb 26, 2019
  12. bisco

    bisco cookie crumbler

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    @Mendel Leisk is our load tester expert (y)

    mine is 7 years, but i'm waiting il it shows some signs of old age. i run a volt meter over it every now and again, just to see if it is dropping at all.
     
    #12 bisco, Feb 26, 2019
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  13. Borninblue

    Borninblue Active Member

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    My mileage is lower than what most people have posted (taking into account winter drops). I have even babied the pedal, although I need a full EGR cleaning which I have on the list. I only have an analog meter so tough for me to test right this second.
     
    #13 Borninblue, Feb 26, 2019
  14. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    The need to load test will continue beyond your current problem. Also good to take along when buying batteries, though most retailers have pro versions, and should be willing to demonstrate with the battery you're buying.

    I got a Solar BA5 a few years ago, rudimentary but works as advertised, around $60 US I think? A smart charger is another nice piece of gear to have.
     
    #14 Mendel Leisk, Feb 26, 2019
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  15. Borninblue

    Borninblue Active Member

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    I just ordered the Solar tester and I have one question. Can I leave the terminals hooked up to the car while I conduct the test or do I have to disconnect the terminal connections to the vehicle and have the battery isolated from the vehicle?
     
    #15 Borninblue, Feb 27, 2019
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