2017 Ford F-350 Super Duty Battery Size, Specs & Replacement Guide

As an ASE-certified master technician, I’ve wrenched on countless modern heavy-duty trucks. When it comes to the 2017 Ford F-350 Super Duty, getting the right battery setup is critical—especially if you’re running the 6.7L Power Stroke diesel, which demands massive cranking power to turn over. Whether you have the gas or diesel powertrain, this guide breaks down everything you need to know about the 2017 Ford F-350 battery specifications.

Quick answer

• BCI Group Size: Group 65 (for both 6.2L gas and 6.7L diesel models).
• Cold Cranking Amps (CCA): 650 CCA minimum for the 6.2L gas engine; 750–850 CCA minimum per battery for the 6.7L diesel.
• Reserve Capacity (RC): 130 to 150 minutes is highly recommended to support the F-350’s complex electrical systems.
• AGM vs Flooded: Flooded lead-acid is standard from the factory on many trims, but an upgrade to AGM (Absorbent Glass Mat) is highly recommended for longevity and vibration resistance.
• Terminal Layout: Standard top post (Positive on the left front when facing the battery).
• Physical Dimensions (Group 65): Approximately 12.06 inches (L) x 7.5 inches (W) x 7.56 inches (H).
• Dual-Battery Setup: The 6.7L Power Stroke diesel requires two Group 65 batteries wired in parallel. Always replace both batteries at the same time to prevent the older, weaker battery from draining the new one.

Replacement battery options

When replacing your Super Duty's battery, stick to reputable brands that can handle heavy-duty applications. Here are some of the best Group 65 replacements:

• DieHard Platinum AGM (Part # 65-AGM): Excellent all-around AGM battery with 750 CCA and deep-cycle capabilities.
• Interstate MTZ (Part # MTZ-65): A premium AGM option offering exceptional durability and 750 CCA.
• Optima YellowTop (Part # D65): Famous for its spiral-cell technology, offering massive vibration resistance and dual-purpose deep cycle/starting capabilities.
• Odyssey Extreme Series (Part # 65-PC1750T): An absolute beast of a battery boasting 950 CCA and incredible reserve capacity, perfect for heavily accessorized trucks.
• ACDelco Gold (Part # 65AGM): A solid OEM-quality replacement offering reliable starting power and 775 CCA.

AGM vs flooded — which does this vehicle need?

From the factory, many 2017 F-350s rolled off the line with standard flooded lead-acid batteries. While a flooded battery will work just fine as a direct replacement, upgrading to an AGM battery is one of the smartest investments you can make for this generation.

Heavy-duty trucks endure stiff suspensions, unpaved job sites, and heavy vibration. AGM batteries are spill-proof and highly vibration-resistant. Furthermore, modern F-350s have massive electrical demands—from the SYNC 3 infotainment systems to trailer towing modules and heated/cooled seats. AGM batteries cycle better and handle parasitic key-off loads much more efficiently than their flooded counterparts.

Post-installation relearn / reset procedure

Like most modern Fords, the 2017 F-350 is equipped with a Battery Management System (BMS). The BMS adjusts the alternator’s charging output based on the battery’s age and state of health. If you do not reset the BMS, the alternator may overcharge your new battery, drastically reducing its lifespan.

How to reset the BMS:

1. Using a Scan Tool: The quickest and most accurate method. Connect a bi-directional OBD2 scanner (like FORScan or a pro-level tool), navigate to the Body Control Module (BCM), and select "BMS Reset."
2. The "Sleep Mode" Method (Passive Relearn): If you don’t have a scan tool, install the new battery, lock the doors, and let the truck sit completely untouched for 8 straight hours. The truck will enter a deep sleep state and read the new battery voltage upon waking up, recalibrating the system.

Signs of a failing battery

Don't wait until you're stranded at a job site or boat ramp. Watch out for these symptoms:

• Slow or sluggish engine cranking, especially on cold mornings (critical on the diesel).
• The "Battery Saver" message appearing on the dashboard display.
• Random electrical gremlins (e.g., SYNC screen freezing, power running boards hesitating).
• Corrosion buildup on the battery terminals.
• A sulfur or "rotten egg" smell under the hood.

Common battery issues for this generation

For the 2017 Super Duty generation, the most common battery-related issue involves the dual-battery setup on the 6.7L diesel. Often, the passenger-side battery takes the brunt of the electrical load and fails slightly before the driver-side battery. Owners sometimes make the mistake of replacing only the passenger battery. Wiring two batteries in parallel means they equalize; an old, degraded battery will constantly drain the brand-new one, ruining it in a matter of months. Always replace diesel batteries in pairs.

Another common issue is parasitic draw from the SYNC module failing to go to sleep properly, which can drain a standard flooded battery in just a few days of sitting.

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