2025 Ford F-350 Super Duty Battery Size & Group

Quick answer

• BCI Group Size:
  • Gas Engine (7.3L Godzilla V8): Group 65
  • Diesel Engine (6.7L Power Stroke V8): Dual Group 65
• CCA Rating (minimum):
  • Gas Engine: 850+ CCA
  • Diesel Engine: 850+ CCA (per battery)
• Reserve Capacity: 150+ minutes (per battery)
• AGM vs Flooded: Flooded is standard, but AGM is an excellent upgrade for increased durability and longer life, especially with the demanding electrical systems in modern trucks.
• Terminal Layout: Top Post
• Physical Dimensions (Group 65): Approximately 12" L x 7.5" W x 7.5" H
• Dual-Battery Setup: Yes, diesel models utilize a dual-battery setup connected in parallel to provide the necessary cranking power for the high-compression diesel engine and to support the extensive electrical demands.

Replacement battery options

• Interstate:
  • Gas/Diesel: MTP-65 (Flooded), MTZ-65 (AGM)
• Optima:
  • Gas/Diesel: YellowTop H6/Group 48 (requires adapter/tray modification for Group 65, consult Optima sizing guide for specific fitment for the F-350. Note: As of my last update, Optima does not offer a direct Group 65 YellowTop. The H6/Group 48 is a common heavy-duty option but may require fitment adjustments.)
• DieHard:
  • Gas/Diesel: Platinum AGM Group 65, Gold Group 65 (Flooded)
• Odyssey:
  • Gas/Diesel: ODP-AGM65 (Performance series AGM)
• ACDelco:
  • Gas/Diesel: Advantage 65AGMHR (AGM), Professional 65S (Flooded)

AGM vs flooded — which does this vehicle need?

For the 2025 Ford F-350 Super Duty, both flooded (lead-acid) and Absorbent Glass Mat (AGM) batteries are viable options. The truck typically comes equipped with flooded batteries from the factory. However, upgrading to an AGM battery offers significant advantages, especially for a vehicle like the F-350 with its robust electrical demands and potential for heavy-duty use.

AGM batteries are designed to be more resistant to vibration, can withstand deeper discharge cycles, and generally have a longer lifespan compared to traditional flooded batteries. This makes them an excellent choice for trucks that might be used for towing, plowing, or those equipped with numerous aftermarket accessories that draw significant power. While an AGM battery will have a higher upfront cost, its enhanced durability and performance can justify the investment over the long term, reducing the likelihood of premature battery failure. For most F-350 owners, especially those pushing their trucks hard, an AGM is highly recommended.

Post-installation relearn / reset procedure

After disconnecting and replacing the battery in your 2025 Ford F-350 Super Duty, several vehicle systems may lose their learned parameters. While the truck will generally "relearn" these over time with normal driving, performing a basic reset can help expedite the process and prevent potential drivability issues.

1. Idle Relearn: After connecting the new battery, start the engine and let it idle for 5-10 minutes without touching the accelerator. This allows the Powertrain Control Module (PCM) to relearn the idle strategy.
2. Window Express Up/Down Reset: If your power windows have an "express up/down" feature that isn