2025 International MV Battery: BCI Group Size & CCA Guide

Quick Answer

• BCI Group Size: Group 31 (typically three batteries in a series/parallel configuration)
• CCA Rating: 925-1150 CCA per battery (minimum for reliable starting)
• Reserve Capacity: 170-200 minutes per battery
• AGM vs. Flooded: Depends on the specific vocational upfit and usage. Refer to owner's manual. Many fleet operators prefer flooded for cost, but AGM offers benefits.
• Terminal Layout: Typically SAE posts, top terminal.
• Physical Dimensions (Group 31): Approximately 13" L x 6.81" W x 9.44" H
• Dual/Multi-Battery Setup: The 2025 International MV typically utilizes a multi-battery setup, often three Group 31 batteries, wired in series-parallel for a 12V system with increased cranking power and reserve capacity.

Replacement Battery Options

• Interstate: MTZ-31 (AGM), 31-MHD (Flooded) – Part numbers are illustrative, always verify with a dealer.
• Optima: Optima offers some commercial solutions, but Group 31 for heavy-duty is less common from them directly. BlueTop and YellowTop are popular for specific applications.
• DieHard: Platinum Group 31 (AGM), Gold Group 31 (Flooded) – Part numbers are illustrative, always verify.
• Odyssey: 31-925, 31-1150 – Known for high performance AGM batteries.
• ACDelco: Advantage 31S-950, Professional 31PG – Part numbers are illustrative, always verify.

AGM vs. Flooded – Which Does This Vehicle Need?

The 2025 International MV, being a medium-duty commercial truck, can utilize either AGM (Absorbent Glass Mat) or flooded lead-acid batteries. The choice often comes down to the specific application, fleet preference, and budget.

• Flooded Batteries: These are the traditional choice, generally less expensive upfront. They are robust and perform well in standard conditions. However, they require occasional maintenance (checking water levels) and are more susceptible to vibration damage and acid stratification.
• AGM Batteries: AGMs offer several advantages for commercial vehicles. They are sealed, maintenance-free, more resistant to vibration, and perform better in extreme temperatures. They also have a lower self-discharge rate and can handle deeper discharge cycles, which is beneficial for vehicles with significant auxiliary power demands or frequent engine starts/stops. Given the diverse upfits and vocational uses of the MV, an AGM battery can provide enhanced reliability and lifespan, especially if the vehicle experiences heavy accessory use while the engine is off (e.g., liftgates, refrigeration units, extensive electronics). Always consult your vehicle