2020 Ram 2500 Battery Size & Group
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
Working on this 2020 Ram 2500? Run just this one job through Repairius.
No big switch. Write the estimate, text it for approval, and get paid on your phone. Keep everything else the way it is.
14-day free trial · credit card required · cancel anytime
Quick Answer
- BCI Group Size: Group 65 (Gasoline), Group 31 (Diesel)
- CCA Rating: 730 CCA minimum (Gasoline), 800+ CCA (Diesel)
- Reserve Capacity: 130 RC minimum (Gasoline), 160+ RC (Diesel)
- AGM vs. Flooded: Depends on trim and factory option; check your current battery. Many come with AGM from the factory, especially higher trims or those with extensive electronics. For diesels, AGM is highly recommended for its durability and consistent power delivery.
- Terminal Layout: Top Post (SAE).
- Physical Dimensions:
- Group 65 (Gasoline): 12.06" L x 7.44" W x 7.56" H
- Group 31 (Diesel): 13.00" L x 6.81" W x 9.44" H
- Dual-Battery Setup: The 2020 Ram 2500 with the 6.7L Cummins diesel engine utilizes a dual-battery setup (two Group 31 batteries).
Replacement Battery Options
- Interstate:
- Gasoline (Group 65): MTP-65 / H-65
- Diesel (Group 31): MT-31P / MTP-31 AGM (Note: Two required for diesel)
- Optima:
- Gasoline (Group 65): YellowTop D34/78 (adapter may be needed for fitment)
- Diesel (Group 31): YellowTop DH6 / H6 (adapter may be needed for fitment, two required for diesel)
- DieHard:
- Gasoline (Group 65): Platinum AGM Group 65
- Diesel (Group 31): Platinum AGM Group 31 (two required for diesel)
- Odyssey:
- Gasoline (Group 65): 65-PC1750
- Diesel (Group 31): 31-PC2150 (two required for diesel)
- ACDelco:
- Gasoline (Group 65): 65AGM / 65S (Professional Silver Series)
- Diesel (Group 31): 31P-925 / 31AGM (Professional Silver Series, two required for diesel)
AGM vs. Flooded — Which Does This Vehicle Need?
The choice between an Absorbed Glass Mat (AGM) and a traditional flooded (lead-acid) battery for your 2020 Ram 2500 depends largely on your engine, trim level, and driving habits. Many modern vehicles, including the Ram 2500, are increasingly designed to utilize AGM batteries, especially those with advanced electronic systems, start-stop technology (though less common in heavy-duty trucks), or higher electrical demands.
For gasoline-powered 2020 Ram 2500s, a high-quality flooded battery can suffice if it meets or exceeds the OEM specifications for CCA and RC. However, an AGM battery offers several advantages: better vibration resistance (crucial for trucks), deeper discharge cycles without damage, faster recharging, and a longer overall lifespan. If your truck came with an AGM battery from the factory, it
More specs for the 2020 Ram 2500
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2020 Ram 2500 Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
Browse by make
Running an auto or diesel repair shop?
Compare Repairius to the shop software you're paying for
$99.99/month (first location included), unlimited users, 14-day free trial.