2020 Toyota Tacoma Battery Size & Group

Quick Answer

• BCI Group Size: 24F
• CCA Rating (minimum): 582 CCA
• Reserve Capacity (minimum): 100 minutes
• AGM vs. Flooded: Comes standard with flooded, AGM is a popular upgrade option.
• Terminal Layout: Top Post, Positive on Left
• Physical Dimensions (Group 24F): Approximately 10.75" (L) x 6.81" (W) x 9" (H)
• Dual-battery setup: Not standard for gasoline models.

Replacement Battery Options

Finding a reliable replacement battery for your 2020 Toyota Tacoma is crucial for consistent performance. Here are some popular choices, keeping in mind that availability and specific part numbers can vary by retailer:

• Interstate: MTZ-24F (AGM), MTP-24F (Flooded)
• Optima: 8073-167 D27F YellowTop (AGM – Note: Group 27F is a common larger upgrade that may require minor tray modification)
• DieHard: Platinum AGM Group 24F
• Odyssey: 24F-750 (AGM)
• ACDelco: 24FAGM (AGM), 24FHP (Flooded)

AGM vs. Flooded — Which Does This Vehicle Need?

The 2020 Toyota Tacoma comes from the factory with a conventional flooded lead-acid battery. These are reliable and cost-effective, offering good performance for most drivers. However, upgrading to an Absorbed Glass Mat (AGM) battery is a very popular choice for many Tacoma owners, and for good reason.

Flooded batteries are the traditional choice, containing liquid electrolyte. They are generally less expensive and perform well in standard conditions.

AGM batteries utilize a special fiberglass mat to absorb the electrolyte, making them maintenance-free, spill-proof, and more resistant to vibration. They often provide higher CCA and reserve capacity, better performance in extreme temperatures, and a longer lifespan compared to flooded batteries. For Tacomas equipped with more electronics, aftermarket accessories, or those that frequently go off-roading, an AGM battery is often a worthwhile upgrade due to its enhanced durability and power delivery. While your Tacoma doesn't require an AGM battery, it's an excellent choice for improved reliability and longevity.

Post-Installation Relearn / Reset Procedure

After replacing the battery in your 2020 Toyota Tacoma, you may notice some anomalies. The vehicle's computer (ECU) may need to re-learn certain parameters. Here's a general procedure, but always consult your owner's manual for specific instructions:

1. Engine Idle Relearn: After connecting the new battery, start the engine and let it idle for 10-15 minutes without touching the accelerator. This allows the engine control unit (ECU) to re-learn its idle parameters.
2. Window One-Touch Reset: If your power windows' one-touch up/down feature isn't working, roll the window down completely, then hold the switch up until the window is fully closed, and continue holding it for an additional 2-3 seconds. Repeat for all windows.
3. Radio/Navigation Settings: You may need to reset your radio presets, clock, and navigation favorites.
4. Tire Pressure Monitoring System (TPMS): The TPMS light might illuminate temporarily. Drive the vehicle for a few miles above 20 mph, and it should extinguish as the system re-calibrates. If it persists, a manual reset might be necessary (refer to your owner's manual).

Signs of a Failing Battery

Recognizing the signs of a dying battery can save you from being stranded. Look out for:

• Slow Engine Crank: The engine turns over sluggishly when you try to start it.
• Dim Headlights/Interior Lights: Especially noticeable when the engine is off or cranking.
• Check Engine Light: A low battery can sometimes trigger various warning lights.
• Corrosion on Terminals: White or bluish powdery substance around the battery posts.
• Swollen Battery Case: Indicative of internal damage or overcharging.
• Foul Odor: A "rotten egg" smell indicates a leaking battery or overcharging.
• Old Age: Batteries typically last 3-5 years; if yours is older, it's wise to have it tested.

Common Battery Issues for This Generation

The 2020 Toyota Tacoma, like many modern vehicles, can experience certain battery-related nuances. While not necessarily "issues" with the battery itself, they are common observations:

• Parasitic Draws: Aftermarket accessories (e.g., dash cams, alarms, upgraded audio) can cause a slow drain on the battery, especially if not wired correctly. Even some factory systems can have minor draws that become problematic if the vehicle sits for extended periods.
• Short Trip Driving: Frequent short trips prevent the alternator from fully recharging the battery, leading to premature battery wear and potential starting issues over time.
• Extreme Temperatures: Both very cold and very hot weather can significantly shorten battery life and reduce its performance. Tacomas in regions with harsh climates may experience shorter battery lifespans.
• OEM Battery Lifespan: While generally reliable, some owners report that the original equipment manufacturer (OEM) battery may not last as long as some aftermarket alternatives.

It's always a good idea to have your battery tested annually, especially before winter or if you notice any of the warning signs discussed above.

Find a trusted shop on Repairius.