2023 Ford F-350 Super Duty — Battery Size & Group

Quick answer

• BCI Group Size: Group 65 (gasoline engines), Group 49/H8 or Group 65 (dual batteries for 6.7L Power Stroke diesel)
• CCA Rating: 800 CCA minimum for gasoline, 750 CCA each for diesel (total 1500 CCA)
• Reserve Capacity: 150-180 minutes for gasoline, 140-160 minutes each for diesel
• AGM vs Flooded: Either is acceptable, but AGM is recommended for its durability and consistent power delivery, especially in diesel applications.
• Terminal Layout: Top post (SAE tapered posts)
• Physical Dimensions: (Group 65) 12" L x 7.5" W x 7.5" H (approximate); (Group 49/H8) 13.9" L x 6.9" W x 7.5" H (approximate)
• Dual-Battery Setup: Yes, 6.7L Power Stroke diesel models utilize a dual-battery setup.

Replacement battery options

Finding the right replacement battery for your 2023 Ford F-350 Super Duty is crucial for reliable performance. Here are some popular, high-quality options:

• Interstate:
  • Gasoline (Group 65): MTP-65 (Flooded), MTZ-65 (AGM)
  • Diesel (Group 49H8 or Group 65): MTP-49/H8 (Flooded), MTZ-49/H8 (AGM) or MTP-65, MTZ-65 (check original battery group size for diesel, as some may use Group 65)
• Optima:
  • Gasoline & Diesel (Group 65): YellowTop D35 (adapter may be needed for Group 65 fitment, though more commonly a Group 34/78 or 65 is used – confirm fitment). Optima also offers Group 34/78 which can sometimes be adapted.
  • For diesel applications, two YellowTop batteries are recommended if using Optima, confirming correct group size fitment (e.g., two Group 34/78 with adapters, or if a Group 65 YellowTop is available).
• DieHard:
  • Gasoline (Group 65): DieHard Platinum AGM Group 65, DieHard Gold Group 65
  • Diesel (Group 49/H8 or Group 65): DieHard Platinum AGM Group 49/H8, DieHard Platinum AGM Group 65
• Odyssey:
  • Gasoline (Group 65): Odyssey Extreme Series Group 65 (65-PC1750T)
  • Diesel (Group 49/H8 or Group 65): Odyssey Extreme Series Group 49/H8 (ODP-AGM49/H8 L5) or Odyssey Extreme Series Group 65 (65-PC1750T)
• ACDelco:
  • Gasoline (Group 65): ACDelco Professional AGM Group 65 (65AGMHR), ACDelco Professional Group 65 (65HR)
  • Diesel (Group 49/H8 or Group 65): ACDelco Professional AGM Group 49/H8 (94RAGM), ACDelco Professional Group 49/H8 (94RHR) or ACDelco Professional AGM Group 65 (65AGMHR)

Always double-check the BCI group size and CCA requirements against your existing battery or owner's manual to ensure a perfect fit and adequate power for your specific F-350 engine and trim level.

AGM vs flooded — which does this vehicle need?

For the 2023 Ford F-350 Super Duty, both Absorbed Glass Mat (AGM) and traditional flooded lead-acid batteries are generally acceptable. However, an AGM battery is highly recommended, especially for the 6.7L Power Stroke diesel models and trucks equipped with extensive electronics or aftermarket accessories.

Here's why:

• Durability: AGM batteries are more resistant to vibration, which is beneficial for a heavy-duty truck application. They are also sealed, spill-proof, and maintenance-free.
• Consistent Power: AGM batteries provide more consistent power output throughout their discharge cycle, which is important for cold starts, especially with diesel engines that require significant cranking power.
• Deep Cycling Capabilities: If your F-350 is used for demanding tasks, frequently runs accessories with the engine off, or has a lot of parasitic draw, an AGM battery's ability to handle deeper discharge cycles without damage is a significant advantage.
• Charging: Modern vehicles, including the F-350, often have sophisticated charging systems that can take full advantage of an AGM battery's charging characteristics.

While flooded batteries are a more economical choice upfront, the benefits of an AGM battery often outweigh the cost difference in the long run for an F-350 owner.

Post-installation relearn / reset procedure

After replacing the battery in your 2023 Ford F-350 Super Duty, it's important to perform a few simple steps to ensure all systems function correctly. Modern vehicles rely on their battery for various memory functions and system calibrations.

1. Idle Relearn: After connecting the new battery, the engine's idle might be slightly erratic for a short period. Drive the vehicle for about 10-15 minutes under varying conditions (some city, some highway) to allow the Powertrain Control Module (PCM) to relearn its idle strategy and fuel trims. You can also let it idle for 10-15 minutes after reconnection without touching the accelerator.
2. Window Express Relearn: If your F-350 has automatic up/down windows, they may lose their express function. To reset:
   • Roll the window down completely and hold the button for 2-3 seconds after it's fully down.
   • Roll the window up completely and hold the button for 2-3 seconds after it's fully up.
   • Repeat for each power window.
3. Radio/Navigation Presets: You will likely need to re-enter your favorite radio stations and navigation home/work addresses.
4. Clock Reset: The clock will need to be reset to the correct time.
5. Battery Monitoring System (BMS) Reset (Optional but Recommended): While not always strictly necessary after a simple battery swap if the new battery is of similar type and capacity, some technicians recommend a BMS reset using a diagnostic scan tool. This tells the vehicle's computer that a new battery has been installed, allowing it to optimize charging. If you don't have access to a scan tool, the system will eventually adapt on its own, but it might take some time.

Signs of a failing battery

Recognizing the signs of a dying battery can prevent you from being stranded. For your 2023 Ford F-350 Super Duty, look out for:

• Slow Engine Crank: The most common sign. If your engine cranks slowly or struggles to turn over, especially on cold mornings, your battery is likely weak.
• Dim Headlights/Interior Lights: When the engine is off, if your lights appear dim, it indicates low battery voltage.
• Battery Warning Light: A battery-shaped warning light on your dashboard indicates a charging system issue, often related to the battery itself or the alternator.
• Corrosion on Terminals: Excessive white or blue powdery corrosion around the battery terminals can impede current flow and is a sign of a leaking battery or poor connection.
• Swelling or Bulging Battery Case: This is an immediate red flag and indicates an internal issue, often due to overcharging or excessive heat. Replace the battery immediately.
• Electrical Gremlins: Unexplained electrical issues like flickering lights, malfunctioning accessories, or erratic dashboard warnings can sometimes be traced back to a weak battery providing unstable voltage.
• Age: While not a direct symptom, if your battery is 3-5 years old or more, it's operating on borrowed time, especially in harsh climates.

Common battery issues for this generation

The 2023 Ford F-350 Super Duty is a robust truck, but like all vehicles, it can experience some battery-related quirks common to heavy-duty trucks with sophisticated electrical systems:

• Parasitic Draw: Modern trucks have numerous modules and systems that draw small amounts of power even when the vehicle is off. If one of these modules malfunctions or stays active, it can lead to a parasitic draw that drains the battery over time.
• Battery Sensor Issues: The Battery Monitoring System (BMS) sensor, typically located on the negative battery terminal, can sometimes give inaccurate readings or faulty data, leading to improper charging or premature battery warning lights.
• Alternator Strain (Diesel): While the F-350's alternators are powerful, the dual-battery setup and high electrical demands of a diesel engine can put a strain on the charging system, especially if one or both batteries are weak.
• Cold Weather Performance: Diesel engines, in particular, demand a tremendous amount of current to crank in cold weather. A marginal battery will quickly fail in freezing temperatures.
• Accessory Drain: Owners who frequently use high-draw accessories (inverters, auxiliary lighting, communication radios) with the engine off can quickly deplete the battery, particularly with a single battery setup.

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