Prius C 12Volt Auxiliary Battery at Costco for $178

Discussion in 'Prius c Main Forum' started by DanManTX, Apr 11, 2026 at 4:54 PM.

  1. DanManTX

    DanManTX Junior Member

    Joined:
    May 6, 2012
    15
    12
    0
    Location:
    Texas
    Vehicle:
    2012 Prius c
    Model:
    Two
    I live in Dallas Texas, and my local Costco did not have this battery in stock, so I ordered it online from them.
    I received it within two days of order (30 pounds, free shipping)

    Please note that this is a slightly longer battery (Group size 46B vs original group size 34B) so you have to use a small sledge hammer and bend the metal bracket that holds the side of the battery in place.
    Reference attached photos.

    The original battery only has 35 Ampere-hours (Ah) and 272 CCA (Cold Cranking Amps).
    The Costco battery has 41 Ampere-hours (Ah) and 410 CCA (Cold Cranking Amps).

    https://costco.interstatebatteries.com/
    Here's the Costco URL. Search on the regular Prius model (not Prius C).
     

    Attached Files:

  2. davidc83

    davidc83 Member

    Joined:
    Oct 14, 2015
    116
    50
    0
    Location:
    Scottsburg, Indiana
    Vehicle:
    2015 Prius c
    Model:
    Five
    My 11 year old OEM 12v battery decided to start going bad this past Friday. I was able to get an exact match S34B20R group size from local advanced auto parts store. It is 340 CCA and 425 CA (which relates more to Prius C as their is not starter and CCA is not needed). Took me 5 minutes to remove and 10 minutes to put new one back in along with seat skirt and put the tools up (10mm socket/rachet and flat head screwdriver). I dont have a costco membership (nearest costco is 2.5 hour drive).