Ram 1500 Battery Size Chart by Year and Engine 1994 to 2026

Ram 1500 battery size depends on the model year and engine, not just the Ram 1500 name. Most modern gas-powered Ram 1500 trucks use a BCI Group 94R battery, also called H7, while the 3.0L EcoDiesel V6 commonly uses the larger Group 49/H8 AGM battery.

Older Dodge Ram 1500 models are less uniform. Group 27 and Group 65 batteries were common, and some transition years changed battery size according to engine, production location, or early versus late production.

Use the chart below as a fitment reference, then confirm the battery label or VIN before ordering a replacement.

Ram 1500 Battery Size Chart by Year 1994 to 2026

BCI means Battery Council International. The BCI group identifies the battery’s approximate physical size, terminal arrangement, and fitment characteristics.

Replacement battery CCA can be higher than the original-equipment rating. For that reason, the chart separates known OE ratings from common replacement ratings instead of treating them as identical.

Battery Council International historical application data confirms Group 27 for many 1995-2001 Ram 1500 engines, while 2002 is specifically split between early Group 27 and later Group 65 applications.

For 2011 and 2012 trucks, replacement catalogs identify the factory group as 94R/H7, with OE ratings around 730 CCA and replacement batteries commonly rated from 750 to 850 CCA.

The 2014 EcoDiesel marks one of the most important engine-specific differences. Firestone lists an H8 AGM at 900 CCA for the 3.0L EcoDiesel V6, compared with H7/94R batteries for the 3.6L Pentastar V6 and 5.7L Hemi V8.

For 2025 and 2026 trucks, Mopar parts catalogs show H7-family service batteries along with configuration-dependent 700, 730, and 750-amp main-battery listings. That is why these years should be checked by VIN instead of assuming one CCA applies to every trim.

What H7 H8 and Ram Battery Group Numbers Mean

Battery group numbers tell you more than how much starting power a battery provides. They describe the physical package, terminal placement, and dimensions that determine whether the battery fits the tray and cables correctly.

H7 and Group 94R

H7 and 94R are commonly used for the same battery size class. A typical H7/94R battery measures roughly:

• Length: 12.4 inches
• Width: 6.9 inches
• Height: 7.4 to 7.5 inches
• Typical Ram replacement output: roughly 750 to 850 CCA

Interstate lists its H7 replacement at 315 × 175 × 190 mm, which converts to approximately 12.4 × 6.9 × 7.5 inches.

H7/94R is the battery family you will see most often on 2011 and newer gas-engine Ram 1500 trucks.

H8 and Group 49

H8, commonly cross-referenced as BCI Group 49, is longer than H7. Typical dimensions are about 13.9 × 6.9 × 7.5 inches.

Ram’s 3.0L EcoDiesel V6 is the important application here. A verified 2018 EcoDiesel fitment uses an H8 AGM rated at 900 CCA.

Do not install H8 simply because it offers more capacity. The tray, hold-down, insulation, cables, and factory application still need to support it.

Group 65

Group 65 was common on third-generation Dodge Ram 1500 trucks. It measures about 12.1 inches long, 7.5 inches wide, and 7.6 inches high, depending slightly on manufacturer.

Historical BCI data shows Group 65 across numerous 3.7L and 4.7L applications from the early and mid-2000s.

Group 27

Group 27 appears repeatedly in second-generation Dodge Ram application data. BCI lists it for 3.9L V6, 5.2L V8, and 5.9L V8 trucks across many 1995-2001 model years.

Those applications commonly had 600 CCA standard batteries or 750 CCA optional batteries.

The group number therefore matters as much as the CCA number. A battery with impressive output is useless if its case or terminal layout does not fit the truck.

Which Ram 1500 Engines Use H7 or H8 Batteries

Engine choice becomes especially important once the Ram 1500 moved into H7 and H8 European-style battery groups.

3.6L Pentastar V6

The 3.6L Pentastar V6 commonly uses a 94R/H7 main battery on modern Ram 1500 models.

Firestone’s 2018 application data lists both a conventional 94RH7 at 800 CCA and an H7 AGM replacement at 850 CCA.

Newer eTorque trucks still have a conventional 12-volt starting battery, but they also have additional electrified-system hardware. Do not confuse the under-hood H7 with the eTorque battery system.

5.7L Hemi V8

Most modern 5.7L Hemi V8 Ram 1500 applications also use Group 94R/H7.

For example, 2018 replacement data lists 800 CCA 94RH7 and 850 CCA H7 AGM options for the 5.7L Hemi V8.

If you are shopping specifically for this engine, Truck Guider also has a dedicated guide to choosing a battery for a Dodge Ram 1500 5.7 Hemi.

3.0L EcoDiesel V6

The 3.0L EcoDiesel V6 is the main exception to the H7 pattern.

Firestone lists H8 AGM at 900 CCA for both 2014 and 2018 EcoDiesel applications.

That H8 case is approximately 1.5 inches longer than H7. The larger case provides additional reserve and cranking capability for diesel starting loads.

3.0L Hurricane I6

The 3.0L Hurricane I6 arrived for the redesigned 2025 powertrain lineup. Stellantis confirms both Standard Output and High Output versions for the 2025 Ram 1500.

Mopar’s 2025 parts catalog lists an H7 service battery, part BBH7F001AA, rated at 750 CCA, alongside other configuration-dependent main and auxiliary battery part numbers.

For this reason, use H7 as the main group-size reference, but verify the VIN before buying a 2025 or 2026 Hurricane replacement.

How eTorque Changes the Ram 1500 Battery System

An eTorque Ram 1500 has more battery-related hardware than a conventional non-electrified truck.

The under-hood 12-volt main battery still handles conventional starting and accessory functions. The eTorque system adds a 48-volt battery and belt starter generator on applicable trucks.

This distinction matters because searching for an “eTorque battery” can return information for the 48-volt system instead of the 12-volt H7 battery you are trying to replace.

The 2025 and 2026 parts catalogs also show auxiliary 12-volt batteries on certain configurations, adding another layer of variation.

For costs and system-specific details, see Truck Guider’s Ram eTorque battery replacement cost guide.

Do not replace an auxiliary or 48-volt battery based only on the main H7 chart. Identify which battery has actually failed before ordering parts.

How to Confirm Your Exact Ram 1500 Battery Size

The chart narrows the fitment, but your installed battery label or VIN should make the final call.

1. Check the existing battery label. Look for 94R, H7, H8, 49, 65, or 27 printed on the case.
2. Confirm the model year and engine. EcoDiesel and gas-engine trucks from the same year can use different batteries.
3. Check terminal orientation. H7/94R Ram applications normally use a right-side positive-terminal layout, but the replacement must match the installed configuration.
4. Measure the battery tray if the truck has been modified. Previous owners sometimes install non-factory battery trays or alternative batteries.
5. Check whether the truck has eTorque, stop-start, or an auxiliary battery. These systems can change battery technology and replacement procedure.
6. Run the VIN through a Mopar parts catalog or reputable battery fitment database. This is especially useful for 2002, 2008-2010, and 2025-2026 trucks.
7. Match the required CCA and chemistry. Do not choose a battery based solely on the largest CCA number available.

Mopar’s 2024 owner handbook places the conventional battery in the engine compartment and provides battery-service and jump-start precautions for the truck.

The VIN check becomes especially valuable where the chart shows multiple possibilities.

AGM vs Flooded Batteries for Ram 1500 Models

Matching H7 or H8 case size is only part of the replacement decision. You also need the correct battery technology.

AGM means Absorbent Glass Mat. AGM batteries hold their electrolyte in fiberglass separators and tolerate repeated cycling better than a basic flooded starting battery.

The same physical group can be sold in different technologies. Firestone lists a 94RH7 at 800 CCA and an H7 AGM at 850 CCA for the same 2018 5.7L Hemi V8 application.

That does not mean every H7 Ram requires AGM. It means group size alone does not tell you the battery chemistry.

If your truck currently has AGM, replacing it with another properly specified AGM is the safer fitment approach. Trucks with stop-start systems and high accessory loads place greater cycling demands on the 12-volt battery.

The 3.0L EcoDiesel V6 is clearer. Verified replacement applications consistently list the larger H8 AGM battery.

How Long a Ram 1500 Battery Usually Lasts

A Ram 1500 starting battery commonly lasts around three to five years, although climate and use can shorten that period. Firestone gives the same three-to-five-year general range in its Ram 1500 battery guidance.

Frequent short trips, long storage periods, extreme heat, freezing weather, aftermarket accessories, and parasitic electrical loads can reduce battery life.

A battery that is three years old does not automatically need replacement. Load testing gives you a better picture of actual starting capacity.

For a deeper breakdown, Truck Guider’s guide explains how long a truck battery should last and which conditions shorten its service life.

Which Ram 1500 Battery Size Should You Buy

For most 2011 and newer gas-engine Ram 1500 trucks, start your search with Group 94R/H7. For a 2014-2023 3.0L EcoDiesel V6, start with Group 49/H8 AGM.

Older Dodge Ram 1500 models require more care. Group 27 dominates many second-generation applications, while Group 65 became common in the third generation. Transition years such as 2002, 2008, and 2009 can have multiple valid fitments.

For 2025 and 2026 trucks, H7 remains the primary group-size reference, but Mopar catalogs show multiple main and auxiliary battery configurations. Confirm the VIN before purchasing.

The safest Ram 1500 battery size chart by year is therefore a starting point, not a substitute for matching the battery label, terminal orientation, CCA, chemistry, and factory configuration.

Frequently Asked Questions

What Battery Size Does a Ram 1500 Use?

Most modern gas-engine Ram 1500 trucks use Group 94R/H7. The 3.0L EcoDiesel V6 commonly uses Group 49/H8 AGM, while older Dodge Ram 1500 trucks can use Group 27 or Group 65 depending on year and engine.

Is H7 the Same as Group 94R?

Yes. H7 and 94R are commonly used as equivalent size designations in North American replacement catalogs. A typical H7/94R battery measures about 12.4 × 6.9 × 7.5 inches.

What Size Battery Does a 5.7L Hemi Ram 1500 Use?

Most 2011 and newer Ram 1500 trucks with the 5.7L Hemi V8 use a 94R/H7 battery. Common replacement ratings fall around 750 to 850 CCA, but you should verify your specific year and factory equipment.

What Battery Does a Ram 1500 EcoDiesel Use?

Verified 2014-2023 3.0L EcoDiesel V6 applications commonly use an H8 AGM, also called Group 49. Firestone lists a 900 CCA H8 AGM for several EcoDiesel model years.

Does a Ram 1500 eTorque Have Two Batteries?

An eTorque Ram uses a conventional 12-volt battery plus a separate 48-volt eTorque battery system. Some newer configurations also show an auxiliary 12-volt battery in Mopar parts catalogs, so battery count and function should be checked by year and VIN.

Can I Put a Higher CCA Battery in My Ram 1500?

A replacement can have a higher CCA rating if the battery group, dimensions, terminal layout, chemistry, and vehicle charging system are compatible. Higher CCA does not make an incorrectly sized battery safe or suitable.