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Group Size

A BCI (Battery Council International) group size is a standardized system that categorizes car and truck batteries by their physical dimensions, terminal configurations, and placement, ensuring compatibility between batteries and vehicles. Different group numbers, such as 24 or 31, correspond to specific sizes and features, with the correct size determined by checking the vehicle's owner's manual or the existing battery. Powersports batteries use a different designation, often a YTX, YTZ, or BTX prefix followed by numbers, which denotes the physical size, capacity (Amp Hours or AH), and type (e.g., lead-acid or lithium).

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  • Odyssey Performance ODP-AGM31 925 CCA AGM Battery (Group 31) Odyssey Performance ODP-AGM31 925 CCA AGM Battery (Group 31)

    Odyssey Performance ODP-AGM31 925 CCA AGM Battery (Group 31)

    Odyssey
    MSRP: $493.40
    $437.99
    Introducing the new ODYSSEY Performance Series battery Model 31-925S (Group 31 stainless steel 3/8" posts) Designed to handle the increased use of onboard accessories in today's vehicles, ODYSSEY Performance Series batteries combine long service life,...
    Qty in Cart: 0
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    MSRP: $493.40
    $437.99
    Subtotal:
  • Odyssey Extreme ODX-AGM31 Group 31 12V AGM Battery Odyssey Extreme ODX-AGM31 Group 31 12V AGM Battery

    Odyssey Extreme ODX-AGM31 12V AGM Battery (Group 31)

    Odyssey

    MSRP: $571.27
    $539.95
    Today's commercial vehicles have to power a range of accessories, both inside the cab and out. And whether on the road, the farm, or the jobsite, ODYSSEY batteries have the power to start any job, and the durability to last until it's finished.)...
    Qty in Cart: 0
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    MSRP: $571.27
    $539.95
    Subtotal:
  • Odyssey Extreme ODX-AGM31R Group 31R 12V AGM Battery

    Odyssey Extreme ODX-AGM31R 12V AGM Battery (Group 31R)

    Odyssey
    $594.95
    Today's commercial vehicles have to power a range of accessories, both inside the cab and out. And whether on the road, the farm, or the jobsite, ODYSSEY batteries have the power to start any job, and the durability to last until it's finished. Featuring...
    Qty in Cart: 0
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    Price:
    $594.95
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  • ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S) ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S)

    ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S)

    ULTRAPOWER
    $299.95
    When you need a battery, you need it FAST, and you need to know you're choosing the best. ULTRAPOWER batteries use only the highest-quality components, grids, and separators, resulting in a battery that provides optimal power for any application.Model:...
    Qty in Cart: 0
    Quantity:
    Price:
    $299.95
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  • ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S) 2 Pack ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S)

    ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S) - 2 Pack

    ULTRAPOWER
    $439.95
    When you need a battery, you need it FAST, and you need to know you're choosing the best. ULTRAPOWER batteries use only the highest-quality components, grids, and separators, resulting in a battery that provides optimal power for any application.Model:...
    Qty in Cart: 0
    Quantity:
    Price:
    $439.95
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  • Maxpower-D 1131MF 12V 950 CCA Maintenance-Free Heavy-Duty Battery (Group 31) Maxpower-D 1131MF 12V 950 CCA Maintenance-Free Heavy-Duty Battery (Group 31)

    Maxpower-D 1131MF 12V 950 CCA Maintenance-Free Heavy-Duty Battery (Group 31)

    Maxpower-D
    $339.95
    When you need a battery, you need it FAST, and you need to know you're choosing the best. Maxpower-D batteries use only the highest-quality components, grids, and separators, resulting in a battery that provides optimal power for any application.Model:...
    Qty in Cart: 0
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    $339.95
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  • ULTRAPOWER 1131P 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31P) ULTRAPOWER 1131P 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31P)

    ULTRAPOWER 1131P 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31P)

    ULTRAPOWER
    $319.95
    When you need a battery, you need it FAST, and you need to know you're choosing the best. ULTRAPOWER batteries use only the highest-quality components, grids, and separators, resulting in a battery that provides optimal power for any application.Model:...
    Qty in Cart: 0
    Quantity:
    Price:
    $319.95
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  • ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S) 4 Pack ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S)

    ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S) - 4 Pack

    ULTRAPOWER
    $724.95
    When you need a battery, you need it FAST, and you need to know you're choosing the best. ULTRAPOWER batteries use only the highest-quality components, grids, and separators, resulting in a battery that provides optimal power for any application.Model:...
    Qty in Cart: 0
    Quantity:
    Price:
    $724.95
    Subtotal:
  • ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S) - 8 Pack ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S)

    ULTRAPOWER 1131S 12V 1000 CCA Maintenance-Free Heavy Duty Battery (Group 31S) - 8 Pack

    ULTRAPOWER
    $1,234.95
    When you need a battery, you need it FAST, and you need to know you're choosing the best. ULTRAPOWER batteries use only the highest-quality components, grids, and separators, resulting in a battery that provides optimal power for any application.Model:...
    Qty in Cart: 0
    Quantity:
    Price:
    $1,234.95
    Subtotal:
  • ULTRAPOWER CA31S 800 CCA AGM Maintenance-Free Heavy Duty Battery (Group 31S) ULTRAPOWER CA31S 800 CCA AGM Maintenance-Free Heavy Duty Battery (Group 31S)

    ULTRAPOWER CA31S 800 CCA AGM Maintenance-Free Heavy Duty Battery (Group 31S)

    ULTRAPOWER
    $459.95
    When you need a battery, you need it FAST, and you need to know you're choosing the best. ULTRAPOWER batteries use only the highest-quality components, grids, and separators, resulting in a battery that provides optimal power for any application.Model:...
    Qty in Cart: 0
    Price:
    $459.95
    Subtotal:
  • ULTRAPOWER CP31S 950 CCA Flooded Heavy Duty Battery (Group 31S) ULTRAPOWER CP31S 950 CCA Flooded Heavy Duty Battery (Group 31S)

    ULTRAPOWER CP31S 950 CCA Flooded Heavy Duty Battery (Group 31S)

    ULTRAPOWER
    $329.95
    When you need a battery, you need it FAST, and you need to know you're choosing the best. ULTRAPOWER batteries use only the highest-quality components, grids, and separators, resulting in a battery that provides optimal power for any application.Model:...
    Qty in Cart: 0
    Price:
    $329.95
    Subtotal:
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