2016 Ram 1500 Battery Size & Group

Quick Answer

• BCI Group Size: H7/94R (Most gasoline engines). Group 65 (Some gasoline engines). Group 31 (3.0L EcoDiesel).
• CCA Rating: 700-800 CCA for gasoline, 750 CCA minimum for EcoDiesel.
• Reserve Capacity: 130-160 minutes (gasoline), 160 minutes+ (EcoDiesel).
• AGM vs. Flooded: The 2016 Ram 1500 usually came with flooded lead-acid batteries from the factory. However, AGM (Absorbed Glass Mat) batteries are often a superior upgrade, especially for vehicles with stop-start technology or heavy accessory loads.
• Terminal Layout: Top post, typically SAE (standard automotive) posts. Positive terminal on the right when looking at the battery from the front.
• Physical Dimensions: Varies slightly by group size. H7/94R: Approx. 12.4" L x 6.9" W x 7.5" H. Group 65: Approx. 12" L x 7.5" W x 7.6" H. Group 31: Approx. 13" L x 6.8" W x 9.4" H.
• Dual-Battery Setup: The 3.0L EcoDiesel engine in the 2016 Ram 1500 typically utilizes a single Group 31 battery, not a dual-battery setup like some heavy-duty diesel trucks.

Replacement Battery Options

When it's time to replace your battery, several reputable brands offer excellent choices. Always confirm the BCI group size and CCA ratings against your specific truck's requirements.

• Interstate:
  • MTX-94R (H7/94R AGM)
  • MTP-94R (H7/94R Flooded)
  • MTX-65 (Group 65 AGM)
  • MTP-65 (Group 65 Flooded)
  • Commercial 31-MHD (Group 31 for EcoDiesel)
• Optima:
  • DH7 YellowTop (H7/94R AGM, Deep Cycle & Starting)
  • D31A YellowTop (Group 31 AGM, Deep Cycle & Starting for EcoDiesel)
• DieHard:
  • Platinum AGM H7 (H7/94R AGM)
  • Platinum AGM Group 65 (Group 65 AGM)
  • Platinum AGM Group 31 (Group 31 AGM for EcoDiesel)
• Odyssey:
  • ODP-AGM94R H7 (H7/94R AGM)
  • ODP-AGM65 (Group 65 AGM)
  • ODP-AGM31A (Group 31 AGM for EcoDiesel)
• ACDelco:
  • 48AGM (H6/48 - often compatible if your truck uses a smaller battery, check dimensions)
  • 94RAGM (H7/94R AGM)
  • 65AGM (Group 65 AGM)

AGM vs. Flooded — Which Does This Vehicle Need?

The 2016 Ram 1500, in most configurations, came equipped with a standard flooded lead-acid battery from the factory. However, an AGM (Absorbed Glass Mat) battery is almost always a superior upgrade for any modern vehicle, including your Ram 1500, even if it didn't originally come with one.

Advantages of AGM batteries:

• Higher cranking power: Excellent starting performance, especially in extreme temperatures.
• Better vibration resistance: More robust construction, ideal for truck applications.
• Slower self-discharge rate: Holds a charge longer when the vehicle is not in use.
• Maintenance-free: No need to check water levels.
• Spill-proof design: Safer to handle and operate.
• Better for accessory loads: If you have aftermarket lights, stereos, or other power-hungry accessories, an AGM battery can handle the deeper discharge cycles better than a flooded battery.

While a flooded battery will certainly work and is generally less expensive, an AGM battery offers enhanced reliability and longevity, making it a worthwhile investment for your 2016 Ram 1500.

Post-Installation Relearn / Reset Procedure

After replacing the battery in your 2016 Ram 1500, it's important to be aware that some electronic systems may require a brief "relearn" or "reset" procedure. This helps the vehicle's computer (PCM/BCM) re-establish proper parameters.

1. Idle Relearn: After connecting the new battery, start the engine and let it idle in Park for at least 5-10 minutes without touching the accelerator. This allows the engine control unit (ECU) to re-learn idle air control settings.
2. Window Express Up/Down (if equipped): If your windows lose their one-touch up/down functionality, roll each window all the way down, then all the way up, holding the switch for 2-3 seconds at the top and bottom of the travel for each cycle. This re-calibrates the window motor.
3. Radio Presets & Clock: These will need to be manually reset.
4. Steering Angle Sensor (less common but possible): If you experience issues with traction control or stability control lights, driving the vehicle normally for a short period (a few miles) with some turns can sometimes re-calibrate the steering angle sensor automatically. If not, a professional scan tool may be required.
5. Drive Cycles: For the best results, drive the vehicle normally through a few drive cycles (starting cold, driving, shutting off, repeating) to allow all monitoring systems to optimize.

Signs of a Failing Battery

Don't wait until your Ram 1500 leaves you stranded. Watch for these common signs of a failing battery:

• Slow Engine Crank: The most obvious sign. The engine turns over sluggishly when you try to start it.
• Dim Headlights or Interior Lights: Especially noticeable when the engine isn't running or during cranking.
• Warning Lights: A battery or charging system warning light on your dashboard.
• Corrosion: White, powdery substance around the battery terminals.
• Swelling or Bulging Battery Case: Indicative of internal damage or overcharging.
• Clicking Sound: Instead of cranking, you hear a rapid clicking sound when turning the key, meaning insufficient power to engage the starter.
• Electrical Gremlins: Unexplained issues with electronics, radio, or power windows.

Common Battery Issues for This Generation

While the 2016 Ram 1500 is generally reliable, its electrical system, like any modern vehicle, puts demands on the battery. Common issues specific to this generation or general to modern trucks include:

• Parasitic Draws: Aftermarket accessories, faulty modules, or even factory components can sometimes draw power when the vehicle is off, leading to a dead battery over time. Diagnosing parasitic draws often requires specialized equipment.
• Factory Battery Longevity: OEM batteries often last 3-5 years. After this period, their performance can decline rapidly, especially in extreme hot or cold climates.
• Infrequent Use: Trucks that sit for extended periods without being driven or connected to a trickle charger are prone to battery discharge and premature failure.
• Voltage Sensitive Electronics: Modern trucks are very sensitive to voltage fluctuations. A weak battery can cause a myriad of seemingly unrelated electrical issues.

Find a trusted shop on Repairius.