2019 Nissan Altima: Battery Size & Specs

Quick answer

• BCI Group Size: Group 47 (also known as H5 or L2)
• Cold Cranking Amps (CCA): 600-700 CCA is the typical factory specification.
• Reserve Capacity (RC): A battery with a reserve capacity of around 100-120 minutes is recommended.
• AGM vs. Flooded: The 2019 Nissan Altima requires an Absorbent Glass Mat (AGM) battery due to its Intelligent Start/Stop system.
• Terminal Layout: The positive terminal is on the right side (Standard SAE posts).
• Physical Dimensions (approximate): 9.68 x 6.89 x 7.48 inches (246 x 175 x 190 mm).
• Dual-battery setup: Not applicable for this vehicle.

Replacement battery options

When it's time to replace the battery in your 2019 Nissan Altima, several reputable brands offer compatible AGM batteries. Here are a few popular options:

• Interstate: MTX-47/H5
• Optima: DH5 YELLOWTOP
• DieHard: Platinum AGM Battery, Group Size 47, 600 CCA (Part # 47H5AGM)
• Odyssey: Performance Series ODP-AGM47H5L2
• ACDelco: Gold 47AGM

AGM vs flooded—which does this vehicle need?

The 2019 Nissan Altima is equipped with an Intelligent Start/Stop system, which automatically shuts down the engine when the vehicle is stationary to save fuel. This technology places a high demand on the battery, requiring frequent and rapid discharges and recharges. For this reason, an Absorbent Glass Mat (AGM) battery is mandatory.

AGM batteries are designed to handle the deep cycling demands of start-stop systems. They have a longer service life and are more resistant to vibration than traditional flooded lead-acid batteries. Using a standard flooded battery in a vehicle designed for an AGM will result in premature battery failure and may cause issues with the vehicle's electrical systems.

Post-installation relearn / reset procedure

After replacing the battery in your 2019 Altima, it's crucial to perform a few relearn procedures to ensure the vehicle's systems operate correctly.

1. Battery Sensor Reset: The 2019 Altima is equipped with a battery current sensor that monitors the battery's state of charge. This sensor needs to be reset after a new battery is installed. This is typically done with a diagnostic scan tool. If this step is skipped, the charging system may not charge the new battery correctly, leading to a shortened lifespan.
2. Idle Air Volume Learning: This procedure allows the Engine Control Module (ECM) to learn the optimal idle air volume. The steps are as follows:
   • Warm up the engine to normal operating temperature.
   • Turn the ignition off for at least 10 seconds.
   • Turn the ignition on (engine off) for 3 seconds.
   • Depress and release the accelerator pedal 5 times within 5 seconds.
   • Wait 7 seconds, then press and hold the accelerator pedal for about 20 seconds until the Malfunction Indicator Light (MIL) stops blinking and stays on.
   • Release the accelerator pedal within 3 seconds after the MIL stays on.
   • Start the engine and let it idle. The idle should be within the specified range.

Signs of a failing battery

• Slow Engine Crank: The engine turns over sluggishly when you try to start the vehicle.
• Dimming Lights: The headlights and interior lights may dim, especially when the engine is idling.
• Warning Lights: A battery or charging system warning light may illuminate on the dashboard.
• Electrical Issues: You may experience problems with the radio, navigation, or other electrical accessories.
• Visible Corrosion: Corrosion around the battery terminals can indicate a leak and a failing battery.

Common battery issues for this generation

The 2019 Nissan Altima, like many modern vehicles, has a high electrical load due to its numerous electronic features. The start-stop system, in particular, puts a significant strain on the battery. As a result, the battery may have a shorter lifespan compared to older vehicles without this technology. It's essential to use the correct AGM battery and ensure it is properly registered with the vehicle's systems to maximize its service life.

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