The 2019 Ram lineup uses a standard 12-volt automotive battery, but the exact group size and configuration depend on the model and engine. This guide explains the typical options, how to confirm the right fit, and what to consider when replacing the battery.
Battery options by Ram variant
Ram’s 2019 lineup includes light-duty Ram 1500 models (with gasoline and EcoDiesel engines) and heavy-duty Ram 2500/3500 models with the Cummins diesel. The battery requirements differ between these configurations, so it’s important to verify the correct size and rating for your specific truck.
- Ram 1500 (gasoline engines such as the 5.7L Hemi): typically uses a single 12-volt battery in Group Size 94R, with roughly 800–900 cold-cranking amps (CCA) and a reserve capacity (RC) around 120–140 minutes.
- Ram 1500 (EcoDiesel or other high-mileage variants): commonly uses the same Group Size 94R or an equivalent high-capacity 12V battery, again with 800–900 CCA, depending on the exact spec.
- Ram 2500/3500 (Cummins diesel and other HD configurations): often employ a dual-battery setup, featuring two 12-volt batteries in parallel. Each battery is higher-capacity (often 750–1000 CCA per battery, depending on the configuration) to support diesel starting and accessories.
Because Ram vehicles can vary by production date and trim, the exact group size and ratings should be confirmed by checking the battery label, the owner’s manual, or a VIN-based parts lookup. This ensures you match the OEM specification for your truck.
How to identify the right battery for your truck
To avoid buying the wrong battery, use a careful verification process that cross-checks the manufacturer’s specs with your vehicle’s details.
- Locate the battery label in the engine bay to read the exact group size (e.g., 94R) and CCA rating. This is the quickest confirmation.
- Consult the owner’s manual or a VIN-based parts lookup service to confirm the recommended battery group size and rating for your specific truck configuration.
- Consider whether your Ram uses a single battery or a dual-battery setup (HD/Cummins diesel models are more likely to have two batteries).
- Select a maintenance-free or flooded 12-volt lead-acid battery that meets or exceeds the OEM CCA and RC specifications.
Verification through the battery label or official documentation ensures compatibility and avoids drift in performance or starting reliability.
Installation and replacement guidelines
Replacing a Ram battery is straightforward if you follow proper safety steps and match the correct specifications. The procedure is similar whether you replace a single battery or two batteries in a dual-battery HD setup.
- Make sure to disconnect the negative (-) terminal first, then the positive (+) terminal to prevent shorts.
- Install the new battery with the correct orientation and terminal positions to align with factory diagrams and protect cable routing.
- Ensure terminal clamps are tight and that corrosion is cleaned from the battery tray and cable ends before reassembly.
- Test the charging system after installation to confirm the alternator is charging properly and that the battery maintains appropriate voltage.
Following these steps helps ensure long-term reliability and prevents electrical issues from a poor connection or incorrect sizing.
OEM versus aftermarket options
Whether you choose an OEM replacement or aftermarket battery, compatibility and spec alignment are key. OEM batteries are designed to meet Ram’s exact requirements, while reputable aftermarket brands can offer equivalent or higher performance at a competitive price. Consider the following options when shopping.
- OEM/Dealer batteries from Mopar or the Ram parts network, guaranteed to match the original specifications.
- Major aftermarket brands (e.g., Interstate, ACDelco, DieHard, Bosch, Yuasa) with batteries labeled to meet or exceed the OEM CCA and RC ratings for your group size.
- Diesel HD configurations should prioritize dual-battery kits or high-capacity batteries rated for heavy starting loads and auxiliary electrical demand.
Choosing a battery with appropriate ratings and a proven reliability track record helps maintain performance, warranty coverage, and peace of mind on the road.
Diesel and heavy-duty specifics
For Ram 2500/3500 models equipped with the 6.7L Cummins diesel, the truck often uses two 12-volt batteries. The exact group sizes and CCA per battery vary by production run, but these dual setups are designed to deliver enough cranking power for cold starts and to support high electrical consumption without depleting one battery prematurely.
Maintenance and care tips
Even the best battery benefits from proper care. Regular maintenance can extend life and reliability, especially in extreme climates.
- Keep battery terminals clean and free of corrosion; apply terminal protectant after cleaning.
- Check the battery’s voltage and charging system periodically, particularly after long trips or extreme weather.
- Ensure you replace the battery before it fails to avoid no-start conditions, especially in cold weather.
Regular inspection and timely replacement aligned with OEM specifications can prevent unexpected breakdowns and preserve starting performance.
Summary
The 2019 Dodge Ram uses a 12-volt automotive battery, with the exact group size and configuration depending on the model and engine—generally 94R for Ram 1500 gasoline and EcoDiesel variants, and a dual-battery setup for heavy-duty Ram 2500/3500 diesels. Always verify the correct size and rating via the battery label, the owner’s manual, or a VIN-based parts lookup. When replacing, aim for a battery that meets or exceeds the OEM CCA and RC specifications, whether you choose an OEM or reputable aftermarket option, and follow proper installation and maintenance practices. This approach ensures reliable starts and long-life performance across the 2019 Ram lineup.