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

Old hybrid battery modules

Discussion in 'Gen 3 Prius Main Forum' started by rjh427, Dec 13, 2022.

Tags:
  1. rjh427

    rjh427 Junior Member

    Joined:
    Jan 17, 2022
    39
    8
    0
    Location:
    Earth
    Vehicle:
    2011 Prius
    Model:
    N/A
    A seller near me is offering up to 38 Gen3 hybrid battery modules. These are loose, not in the carrier/holder. Seller claims they're still holding 6 volts after a year of sitting around.

    What are the odds that they are good modules, if they've really sat that long and are still holding that much charge?
     
    #1 rjh427, Dec 13, 2022
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,991
    49,089
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    50/50
     
    #2 bisco, Dec 13, 2022
  3. ForestBeekeeper

    ForestBeekeeper Active Member

    Joined:
    Sep 19, 2011
    697
    269
    0
    Location:
    Maine
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    RE: used hybrid battery modules.

    Without extensive testing, there is no way to predict.

    I have had an extensive conversation with the Service Manager of my Toyota dealership, I am left very disappointed that the vehicle designers failed to include any form of internal diagnosis capability. With laptop batteries, you can always use a diagnostic to tell you the 'health' of the battery. It should not be any different when discussing an automobile.
     
    #3 ForestBeekeeper, Dec 13, 2022
  4. PriusII&C

    PriusII&C Active Member

    Joined:
    Oct 15, 2013
    370
    127
    0
    Location:
    San Jose, California
    Vehicle:
    2012 Prius
    Model:
    II
    How to judge a battery's condition based on its voltage change over time?

    My Price-C has been parked in the garage for the last 2 and a-half years. I check and charge its traction battery once a few months. Never see SOC bar change. Last time I left it at 6 bars. Today it is still at 6 bars after 4+ months.

    The battery is overe 10 years old and has 110k miles.
     
    #4 PriusII&C, Dec 13, 2022
  5. rjh427

    rjh427 Junior Member

    Joined:
    Jan 17, 2022
    39
    8
    0
    Location:
    Earth
    Vehicle:
    2011 Prius
    Model:
    N/A
    From what I understand, the "life" is based on charge-discharge cycles, the 10-years thing is an approximation based on time and operating hours, which are themselves approximated from mileage.

    Given all of that, it makes sense that an older battery in a seldom-used, low-mileage vehicle still has some life in it after +10 years. I welcome correction from any gurus who know better than me.
     
    #5 rjh427, Dec 13, 2022
  6. alftoy

    alftoy Senior Member

    Joined:
    Mar 16, 2009
    1,132
    508
    0
    Location:
    Saskatchewan, Canada
    Vehicle:
    2008 Prius
    Model:
    Base
    How much for the modules? Also where on earth are the modules currently located or where were they previously located. Modules from southern heat zones have a degraded shortened life span.

    I've had modules at 6 volts that were basically junk, 7.2 volts after sitting for a year is even better. Mind you I had a pack that had been sitting for a year, 3 even at 7 volts after load testing turned out to be unusable. Can't say definitively unless you load test them, so take a load tester with you.
     
    #6 alftoy, Dec 13, 2022
    Last edited: Dec 13, 2022
    bisco likes this.
  7. strawbrad

    strawbrad http://minnesotahybridbatteries.com

    Joined:
    Aug 9, 2011
    953
    996
    0
    Location:
    Minnesota
    Vehicle:
    2005 Prius
    Model:
    II
    The short answer is zero.

    Modules that self discharge below 7.2 volts are non recoverable junk.
     
    #7 strawbrad, Dec 13, 2022
  8. Grit

    Grit Senior Member

    Joined:
    Aug 22, 2017
    6,117
    4,041
    1
    Location:
    Wilkes Land
    Vehicle:
    2012 Prius
    Model:
    Four
    Do you have a code I can use and will you pr vide me 24/7 support if I use it on your website?
     
    #8 Grit, Dec 13, 2022
    Last edited: Dec 13, 2022
  9. rjh427

    rjh427 Junior Member

    Joined:
    Jan 17, 2022
    39
    8
    0
    Location:
    Earth
    Vehicle:
    2011 Prius
    Model:
    N/A
    So with that low of a voltage they are probably paperweights that should be taken to Batteries Plus, got it.

    Seller was wanting $5 each, but I think it was a scam. I asked what year vehicle they came out of, no answer. Instead, seller claimed they were traveling to Wisconsin and they asked me to send "honest" money. I passed that up without looking back. Tampa Bay area.
     
    #9 rjh427, Dec 14, 2022
    bisco likes this.
(You must log in or sign up to post here.)