2020 Jeep Grand Cherokee Battery: Specs, Replacement & DIY Guide

Quick Answer

• BCI Group Size: H7/94R
• CCA Rating: 800-850 CCA (minimum, often higher for OE)
• Reserve Capacity (RC): 140-160 minutes
• AGM vs. Flooded: Requires AGM battery due to Stop/Start (ESS) system
• Terminal Layout: Top Post, usually positive on the right (R)
• Physical Dimensions: 12.4" L x 6.9" W x 7.5" H (typical for H7)
• Dual-Battery Setup: Not applicable for gasoline models.

Replacement Battery Options

Given the 2020 Jeep Grand Cherokee's requirement for an AGM battery to support its Stop/Start (ESS) system, here are some popular replacement options:

• Interstate: MTX-94R/H7 (AGM - Check for specific part numbers for AGM variant as Interstate often has both flooded and AGM for the same group)
• Optima: Optima H7 YellowTop AGM (often listed by group H7 or 94R)
• DieHard: Platinum AGM H7 Group 94R (often available at Advance Auto Parts/Pep Boys)
• Odyssey: ODP-AGM94R H7L2 (Extreme Series AGM)
• ACDelco: 94RAGM (ACDelco Gold or Professional AGM)

Note: Always double-check the specific part number with your retailer or manufacturer to ensure it's the correct AGM battery for your vehicle.

AGM vs. Flooded — Which Does This Vehicle Need?

The 2020 Jeep Grand Cherokee, particularly models equipped with the Engine Stop/Start (ESS) system, requires an Absorbed Glass Mat (AGM) battery. Using a traditional flooded lead-acid battery in a vehicle designed for AGM can lead to several problems:

• Reduced Battery Life: Flooded batteries are not designed for the constant deep cycling and higher electrical demands associated with ESS systems. They will fail prematurely.
• System Malfunctions: The ESS system may not function correctly, or error messages may appear.
• Alternator Strain: The charging system is calibrated for AGM batteries. Using a flooded battery can put undue strain on the alternator.

AGM batteries are more robust, handle deeper discharges, recharge faster, and are sealed, making them maintenance-free and spill-proof. They are essential for modern vehicles with advanced electrical systems.

Post-Installation Relearn / Reset Procedure

After replacing the battery in your 2020 Jeep Grand Cherokee, it's crucial to perform some basic resets to ensure all vehicle systems function correctly. While some systems may self-relearn after a driving cycle, others might require a manual reset:

1. Windows: Roll each window down completely, then roll it up completely and hold the switch for a few seconds. This resets the express up/down feature.
2. Radio/Navigation: You may need to re-enter radio presets and navigation preferences. In some cases, satellite radio may need a brief period to re-acquire its signal.
3. Engine Stop/Start (ESS): The ESS system will typically self-recalibrate after a few driving cycles. It may not engage immediately after a new battery install until the vehicle "learns" the new battery