2024 Toyota Tundra Battery Size & Replacement Guide

Quick answer: 2024 Toyota Tundra Battery Specs

• BCI Group Size: H7 / 94R
• Cold Cranking Amps (CCA): 730-800 CCA
• Reserve Capacity (RC): 140-150 minutes
• Battery Type: Absorbent Glass Mat (AGM) Required
• Terminal Layout: Left-Hand Positive (Reverse Terminal)
• Dimensions (L x W x H): 12.4 x 6.9 x 7.5 inches (315 x 175 x 190 mm)
• Dual-Battery Setup: Not applicable; all 2024 Tundras are hybrid or gasoline.

Replacement Battery Options

The 2024 Toyota Tundra, with its i-FORCE MAX hybrid and standard i-FORCE twin-turbo V6 engines, relies on a robust electrical system. A high-quality AGM battery is essential to power the onboard electronics and support the start-stop system. When it’s time for a replacement, consider these popular and reliable options:

• Interstate MTX-94R/H7: A direct-fit AGM replacement known for its long life and high cranking power.
• Odyssey Extreme Series ODP-AGM94R H7 L4: A premium, military-grade option offering exceptional deep-cycling capability and a very long service life.
• DieHard Platinum AGM 94R/H7: A trusted name offering a powerful and reliable AGM battery that meets or exceeds OEM specifications.
• ACDelco Gold 94RAGM: A top-tier AGM battery from a well-respected OE supplier, ensuring a perfect fit and reliable performance.
• Optima YellowTop DH7: While not a direct drop-in (may require a spacer), the YellowTop is a popular high-performance AGM choice for vehicles with heavy electrical loads from accessories like winches, auxiliary lighting, or high-end audio systems.

AGM vs. Flooded — Which Does This Vehicle Need?

The 2024 Toyota Tundra requires an Absorbent Glass Mat (AGM) battery. Do not substitute a conventional flooded lead-acid battery.

The Tundra's sophisticated electronics, start-stop system, and hybrid powertrain demand the stable power and deep-cycling capabilities that only an AGM battery can provide. The battery is located inside the cabin, under the rear seat, a location that requires a sealed, non-gassing battery for safety. AGM batteries are fully sealed, spill-proof, and designed to handle the high electrical demands and vibrations of modern vehicles. Installing a flooded battery will lead to poor performance, a shorter service life, and potential damage to the vehicle's charging and electronic systems.

Post-Installation Relearn / Reset Procedure

After replacing the battery in your 2024 Tundra, a few reset procedures may be necessary to ensure all systems function correctly.

1. Initialize Window Motors: The "auto up/down" feature for the power windows may not work immediately. To reset it, go to each window switch. Press and hold the switch down until the window is fully open, and continue holding it for two seconds. Then, pull and hold the switch up until the window is fully closed, and continue holding it for another two seconds. This re-initializes the auto function.
2. Reset Steering Angle Sensor: While not always required, the stability control system may need a reset. The warning light will typically go out after a short period of normal driving as the system recalibrates itself.
3. Idle Relearn: The engine's idle speed is controlled by the Engine Control Module (ECM), which may need to relearn its strategy. Simply start the truck, let it warm up to operating temperature, and allow it to idle in Park for 5-10 minutes. This gives the ECM time to adjust.

Signs of a Failing Battery

A failing battery in a hybrid vehicle like the Tundra can sometimes present differently than in a traditional car. Watch for these signs:

• Slow Engine Crank: The engine turns over more slowly than usual when starting.
• Warning Lights: A "Check Charging System" or battery warning light may appear on the dash.
• Electrical Gremlins: Unexplained issues with the infotainment screen, flickering lights, or other electronic malfunctions.
• Frequent Start-Stop System Deactivation: If the start-stop feature rarely engages, it could be because the battery doesn’t have enough charge to reliably restart the engine.
• Swollen or Leaking Battery Case: Any physical deformity or corrosion on the battery terminals is a clear sign that replacement is needed immediately.

Common Battery Issues for This Generation

As the third-generation Tundra (2022-present) is still relatively new, widespread, long-term battery issues have not yet become common. However, the most frequent "problem" owners report is the rapid discharge of the 12V battery when the truck sits unused for extended periods. This is due to the constant, low-level power draw from the numerous onboard computers and security systems (a phenomenon known as "parasitic draw"). To prevent a dead battery after a long vacation or storage, it is highly recommended to use a quality AGM-compatible battery tender or maintainer.

Find a trusted shop on Repairius.