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

12v Battery Terminal Size?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Redpoint5, Mar 3, 2016.

  1. Redpoint5

    Redpoint5 Senior Member

    Joined:
    Aug 31, 2013
    1,026
    509
    0
    Location:
    Portland, OR
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    I went to the parts store to get the cable end terminals that attach to the battery posts and bought a "universal" set. It seems they aren't so universal because the Prius 12v battery posts are smaller diameter than normal.

    What size are the battery posts? I need to find some cable terminals that will fit the posts to complete an experiment I'm working on.
     
  2. JimboPalmer

    JimboPalmer Tsar of all the Rushers

    Joined:
    Apr 14, 2009
    12,470
    6,871
    2
    Location:
    Greenwood MS USA
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Redpoint5 likes this.
  3. StarCaller

    StarCaller Senior Member

    Joined:
    Feb 15, 2014
    1,257
    706
    0
    Location:
    Cedar Crest, NM, USA
    Vehicle:
    2014 Prius
    Model:
    Two
    autozone, battery post shims/

    [​IMG]
     
    Redpoint5 likes this.
  4. Redpoint5

    Redpoint5 Senior Member

    Joined:
    Aug 31, 2013
    1,026
    509
    0
    Location:
    Portland, OR
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    I've scoured the web for JIS battery terminals but have turned up nothing. It seems the terminals aren't available except as whole cables offered to the OEM.

    Looks like I'll have to use those shims, but at least they are cheap.
     
  5. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
    Oct 17, 2010
    56,682
    39,222
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Off-topic, but I wonder if the 2016 with it's in-the-engine-bay battery has gone to regular North American size posts.
     
  6. LuckyDog

    LuckyDog Junior Member

    Joined:
    Dec 29, 2017
    2
    1
    0
    Location:
    Redlands
    Vehicle:
    2012 Prius
    Model:
    Prime Plus
    Late to the post, but I've recently been modding the electrics on my 2012 and came across this image regarding the JIS terminals and the dimensions. I've ordered some shims so I'll post that info when the mods are completed.

    battery terminal size chart.png
     
  7. wsalopek

    wsalopek Junior Member

    Joined:
    Dec 5, 2003
    70
    5
    0
    Location:
    Morro Bay, CA
    Vehicle:
    2015 Prius Plug-in
    Model:
    II
    So what size ARE the posts? Eyeballing looks like 13mm? Thanks...