2019 Ram 1500 Battery Replacement Guide

Quick Answer

• BCI Group Size: H7/94R (for gasoline engines)
• CCA Rating: 730-800 CCA (minimum, depending on original equipment and engine)
• Reserve Capacity: 130-140 minutes
• AGM vs. Flooded: AGM is recommended and often original equipment for the 2019 Ram 1500 with start/stop technology. Flooded lead-acid batteries can be used in some configurations, but AGM provides superior performance and longevity.
• Terminal Layout: Top post, typically DIN (European) style with recessed terminals.
• Physical Dimensions: Approximately 12.4 inches (L) x 6.9 inches (W) x 7.5 inches (H).
• Dual-Battery Setup: Not typically found on gasoline 2019 Ram 1500 models.

Replacement Battery Options

Finding the right battery for your 2019 Ram 1500 is crucial for reliable starting and powering its numerous electronic systems. Here are some popular replacement options:

• Interstate: MTZ-94R (AGM, generally 760 CCA)
• Optima: DH6 YellowTop (AGM, can be used as an H7 replacement, often 800 CCA) or H7 YellowTop, if available for specific applications
• DieHard: Platinum AGM H7/94R (typically 850 CCA)
• Odyssey: Extreme Series ODP-AGM94R (AGM, typically 850 CCA)

AGM vs. Flooded — Which Does This Vehicle Need?

The 2019 Ram 1500, especially those equipped with the eTorque mild-hybrid system or automatic start/stop technology, requires an Absorbed Glass Mat (AGM) battery. The advanced electrical systems and the demands of frequent engine restarts place a significant burden on the battery that standard flooded lead-acid batteries are not designed to handle. While a flooded battery might fit physically, it will likely fail prematurely and may not provide adequate power for all vehicle functions, potentially triggering dash warning lights.

For Ram 1500 models without eTorque or start/stop, a high-quality flooded lead-acid battery could technically be used if it meets the BCI group size, CCA, and Reserve Capacity requirements. However, given the overall sophistication of modern trucks, an AGM battery is always a superior choice, offering greater durability, resistance to vibration, and a longer service life.

Post-Installation Relearn / Reset Procedure

After replacing the battery in your 2019 Ram 1500, it's important to perform a simple relearn or reset procedure. This ensures that the vehicle's various electronic control modules (ECMs) properly adapt to the new battery and function correctly.

1. Disconnect the Negative Terminal: Before doing anything, always disconnect the negative battery terminal first. Then disconnect the positive terminal. (Reverse for reconnecting).
2. Install New Battery: Place the new battery securely in the tray. Reconnect the positive terminal, then the negative terminal.
3. Idle Relearn: Start the engine and let it idle for at least 5-10 minutes without touching the accelerator. This allows the engine control unit (ECU) to relearn its idle parameters.
4. Window Express Up/Down Reset: If your power windows have an "express up/down" feature, they may need to be reset. Lower each window completely, then raise it completely, holding the switch for 2-3 seconds at the top and bottom of the travel. This recalibrates the window's travel limits.
5. Radio/Navigation/Clock: You will likely need to reset your radio presets, navigation settings, and the clock. Some vehicles may require entering an anti-theft code for the radio if it was supplied with the vehicle.
6. Drive Cycle: Drive the vehicle for a short period (15-20 minutes) to allow other systems like the transmission control module (TCM) to adapt. You might notice slightly different shift points for a short while, but this should normalize quickly.

Always consult your owner's manual for any specific battery replacement or reset instructions for your exact trim level.

Signs of a Failing Battery

• Slow Engine Crank: The most common sign. The engine sounds sluggish when you try to start it.
• Dim Headlights/Interior Lights: Especially noticeable when the engine is off or cranking.
• Warning Lights: A battery or charging system light on your dashboard.
• Frequent Start/Stop System Malfunctions: If your truck's start/stop system stops working frequently, it can be a sign of low battery voltage or health.
• Corrosion on Terminals: Excessive corrosion can indicate a gassing battery or poor connection.
• Swollen Battery Case: A bulging or cracked battery case is a clear sign of internal damage and requires immediate replacement.
• Electrical Gremlins: Unexplained issues with electronics, flickering lights, or erratic dashboard readings.

Common Battery Issues for This Generation

The 2019 Ram 1500, being a modern vehicle with significant electronic demands, can experience some specific battery-related challenges:

• High Parasitic Draw: With numerous modules constantly drawing power, a small electrical issue can lead to excessive parasitic draw, draining the battery even when the vehicle is off.
• eTorque System Demands: Models equipped with the eTorque system put extra strain on the battery due to the repeated engine restarts and auxiliary power demands, making a healthy AGM battery essential.
• Start/Stop System Strain: Similar to eTorque, the frequent cycling of the engine places increased stress on the battery, accelerating wear on non-AGM batteries.
• Electronic System Sensitivity: Low battery voltage can cause various electronic systems to malfunction, leading to false warning lights or intermittent component operation.
• Battery Management System (BMS): The 2019 Ram 1500 utilizes a BMS that monitors battery health. It's crucial for the system to "learn" a new battery, which is why the reset procedure is important.

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