The Jeep Gladiator typically uses a 12-volt battery in a Group 94R size, often with AGM construction, delivering around 800–900 cold-cranking amps. Exact sizing can vary by year, trim, and optional equipment, so always verify on the battery label or with the dealer.
The Gladiator shares its electrical architecture with the Wrangler JL, so it generally follows the same battery sizing patterns shown in factory documentation and common aftermarket references. This article outlines the typical sizes, how to confirm yours, and what to consider when replacing a battery on these trucks.
Common OEM battery sizes seen in Gladiator models
Below is a quick reference to the sizes you will likely encounter on Gladiator builds, along with notes to help confirm the right fit for your specific vehicle.
- Group 94R: The most commonly specified size for late-model Gladiators; typically 800–900 CCA with AGM construction to support modern electronics and start-ups.
- Group 86R (or similar): Some configurations or older production may use a slightly smaller 86R-style case; always check the exact label for CCA, capacity, and dimensions.
Conclusion: For most Gladiator configurations today, 94R is the standard fit, but verify with the battery label or factory documentation for your exact build.
How to verify the exact battery size for your Gladiator
Use these steps to ensure you replace with the correct group size and compatibility for your year and equipment.
- Check the battery label to read the group size (for example, 94R or 86R) and the CCA rating.
- Consult the owner's manual, which lists the recommended battery group size and specification for your model.
- Look for under-hood markings or a stamped sticker near the battery tray indicating the recommended group size.
- Use your VIN to verify with a Jeep dealer or official parts portal, which can pull the exact OEM spec for your build.
- Consider equipment loads: if you’ve added heavy electrical accessories (winches, large aftermarket audio, auxiliary lighting), you may need a higher-capacity AGM within the same physical size.
Conclusion: Identifying the correct group size ensures a proper fit and charging compatibility when replacing the battery.
Replacement considerations and installation tips
To ensure reliable starts and electrical reliability after replacement, keep these guidelines in mind.
- Prefer AGM batteries for modern Gladiators with lots of electronics, due to better vibration resistance and performance in cold weather.
- Match the terminal configuration and orientation to avoid cable routing problems or clearance issues.
- Ensure the battery tray, hold-down clamp, and mounting points fit the chosen group size to prevent vibration damage.
- Recycle the old battery properly through a licensed facility or dealership.
Conclusion: A correct-fit, appropriately rated battery (often AGM) installed with proper mounting and disposal practices helps maintain reliability and longevity of the Gladiator’s electrical system.
Summary
The Jeep Gladiator typically uses a 12-volt Group 94R AGM battery, providing around 800–900 CCA, as the standard OEM fit. Some builds may use Group 86R or similar sizes depending on year or optional equipment. Always verify the exact group size on the battery label, consult the owner's manual, or check with a Jeep dealer using your VIN to ensure you purchase the correct replacement. When in doubt, stick to the same group size and AGM type to preserve charging compatibility and performance.
What size battery goes in a Jeep?
The ideal battery for a Jeep Wrangler is either a group size 34, H6 or H7 battery, but this varies depending on the vehicle's manufacturing year and engine size. The Jeep Wrangler is a versatile vehicle, but choosing the right battery can be challenging.
What size battery does a Jeep Gladiator take?
DieHard Gold – Battery : H6 Group Size, 750 CCA, 935 CA, 115 Minute Reserve Capacity (Part No. 48H6)
How much is a new battery for a Jeep Gladiator?
between $384 and $441
The average cost for a Jeep Gladiator Battery Replacement is between $384 and $441. Labor costs are estimated between $122 and $179 while parts are typically priced around $262.
What kind of battery is in a 2020 Jeep Gladiator?
Battery type: The 2020 Jeep Gladiator typically uses a lead‑acid automotive battery engineered for higher cranking power; some configurations may use enhanced capacity options for heavy accessory use.