2016 Ram ProMaster Battery Size & Group

Quick Answer

• BCI Group Size: H7/94R
• CCA Rating: 800 CCA (minimum)
• Reserve Capacity: 140-160 minutes (minimum)
• AGM vs. Flooded: Flooded is standard, but AGM is an excellent upgrade for improved durability and cycling ability.
• Terminal Layout: Top Post; usually with recessed terminals that require specific cables or adapters.
• Physical Dimensions: (L x W x H) 12.4" x 6.9" x 7.5" (approximate, varies slightly by manufacturer)
• Dual-Battery Setup: Not typically equipped with a dual-battery setup from the factory for the standard gasoline engine. Some upfitters or diesel conversions might add one.

Replacement Battery Options

Finding the right battery for your 2016 Ram ProMaster is crucial for reliable starting and to power all its electrical systems. Here are some popular replacement options:

• Interstate: MTZ-94R/H7 (AGM) or MTP-94R/H7 (Flooded)
• Optima: Optima YellowTop H7 (AGM) - Note: Optima may require specific adapters due to their unique terminal design.
• DieHard: Platinum AGM H7 (AGM) or Gold H7 (Flooded)
• Odyssey: ODP-AGM94R H7 (AGM)
• ACDelco: 94RAGM (AGM) or 94R Advantage (Flooded)

AGM vs. Flooded — Which Does This Vehicle Need?

The 2016 Ram ProMaster comes standard with a traditional flooded lead-acid battery. This type of battery is perfectly adequate for most drivers and applications. However, an Absorbed Glass Mat (AGM) battery is a significant upgrade that offers several advantages:

• Durability: AGM batteries are more resistant to vibration and impacts, which is beneficial for a commercial vehicle like the ProMaster that often experiences rougher roads or constant stop-and-go driving.
• Deeper Cycling: If your ProMaster is used for applications that involve frequent accessory use while the engine is off (e.g., refrigeration units, power inverters, detailed work lighting), an AGM battery can handle deeper discharges and recharge cycles better than a flooded battery, extending its lifespan.
• Maintenance-Free: AGM batteries are sealed and do not require watering, making them truly maintenance-free.
• Slower Self-Discharge: They hold their charge longer when the vehicle is not in use.

While an AGM battery typically costs more upfront, its extended lifespan and enhanced performance can often justify the investment, especially for commercial use.

Post-Installation Relearn / Reset Procedure

After replacing the battery in your 2016 Ram ProMaster, it's important to be aware of potential issues and perform a simple reset:

1. Engine Control Module (ECM) Relearn: The ECM may lose some of its learned parameters when the battery is disconnected. This can lead to slightly rough idling or altered shift patterns for the first few driving cycles. Drive the vehicle normally for 20-50 miles, with a mix of city and highway driving, to allow the ECM to re-learn its adaptations.
2. Window Express Up/Down Reset: If your power windows lose their express up/down function, roll each window all the way down, then all the way up, holding the button for an extra 2-3 seconds at each extreme. This typically recalibrates the window modules.
3. Radio/Navigation Settings: You will likely need to re-enter your radio presets and potentially re-pair Bluetooth devices. Some navigation systems might require a few minutes to re-acquire GPS signals.
4. Electronic Stability Control (ESC) / ABS Light: In some cases, the ESC or ABS light may illuminate briefly after a battery disconnect. Driving the vehicle for a short distance, including a few turns, usually extinguishes these lights as the system recalibrates.

Signs of a Failing Battery

Don't wait for your battery to die completely. Look out for these warning signs:

• Slow Engine Crank: The engine turns over more slowly than usual when starting.
• Dim Headlights/Interior Lights: Especially noticeable when trying to start the vehicle.
• Warning Lights: Battery or check engine lights illuminating on the dashboard.
• Corrosion: Excessive corrosion around the battery terminals (for flooded batteries).
• Swollen Battery Case: A bulging or cracked battery case usually indicates internal damage, often due to overcharging or freezing.
• Age: Most automotive batteries last 3-5 years. If yours is older, it's likely nearing the end of its life.

Common Battery Issues for This Generation

Owners of 2014-2023 Ram ProMaster vehicles (the same generation as your 2016 model) occasionally report specific battery-related concerns:

• Parasitic Draws: Due to the numerous electronic modules and features in modern vans, parasitic draws can sometimes drain the battery prematurely if the vehicle sits for extended periods. If you frequently find your battery dead after the van has been parked for a few days, a parasitic draw test may be necessary.
• Alternator Issues: While less common than battery failure, a failing alternator can lead to undercharging or overcharging, both of which shorten battery life. If your battery warning light is on, have the charging system checked immediately.
• Terminal Corrosion: Given the often harsh environments commercial vehicles operate in, battery terminal corrosion can be an issue. Regular cleaning and application of anti-corrosion spray can prevent poor connections and starting problems.

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