The 2021 Ram 1500 uses a standard 12-volt automotive battery for the basic electrical system, and if your truck is equipped with the eTorque mild-hybrid system, there is a separate 48-volt battery pack to support that system.
In practical terms, most Ram 1500 models rely on a conventional 12V battery to start the engine and run accessories, while the optional eTorque mild-hybrid setup adds a secondary 48V lithium-ion battery to provide hybrid assistance and energy recovery. This dual-battery arrangement is the key distinction you’ll encounter when shopping for or maintaining a 2021 Ram 1500.
Battery configurations in the 2021 Ram 1500
The Ram 1500’s battery setup varies by whether the vehicle is equipped with the eTorque system.
- 12-volt battery: conventional lead-acid automotive battery powering the starting system and standard electrical loads.
- 48-volt battery pack: lithium-ion battery used to support the eTorque mild-hybrid system, available only on models with the eTorque option.
In short, the core starting battery is 12V, and the 48V pack only appears on eTorque-equipped configurations. This dual-battery arrangement enables hybrid-like torque assist and energy recovery without converting the entire system to a high-voltage setup.
Does my 2021 Ram 1500 have the eTorque system?
To determine whether your truck includes the 48-volt eTorque system, use these verifications from documentation or the vehicle itself.
- Check the window sticker or the owner’s manual for “eTorque” or “48V mild-hybrid” terminology.
- Inspect under the hood for a second battery or wiring labeled 48V near the engine bay; the presence of a 48V component indicates eTorque.
- Confirm with the VIN or dealer service records if the vehicle was factory-equipped with eTorque.
Trucks with eTorque will have a dedicated 48V lithium-ion battery pack as part of the hybrid system, in addition to the standard 12V battery. If you don’t see 48V hardware, your Ram 1500 is likely the non-eTorque configuration.
Maintenance and replacement tips
When it comes to maintenance and replacement, keep these guidelines in mind.
- 12-volt battery: replace with a standard 12V automotive battery of the correct size and rating as specified in your owner’s manual; many models use a maintenance-free lead-acid option, but confirm the exact group size and CCA rating for your truck.
- 48-volt battery pack: typically serviced by a dealer or authorized technician; replacement involves the hybrid system and is not a routine consumer battery replacement like the 12V unit.
Always consult your owner's manual or a Ram dealership for exact specifications and replacement procedures, especially if your Ram 1500 has the eTorque system, to ensure compatibility and proper safety handling.
Summary
Across the 2021 Ram 1500 lineup, the standard electrical system relies on a 12-volt automotive battery, while a 48-volt lithium-ion pack supports the optional eTorque mild-hybrid system. Identifying whether your truck has eTorque is key to understanding which batteries are present and how maintenance should be handled. For precise part numbers, group sizes, and replacement steps, refer to the vehicle’s documentation or contact a Ram dealer.
What kind of battery does a 2021 Ram 1500 have?
Diehard Platinum – Enhanced Flooded Battery: H7 Group Size, 800 CCA, 150 Minute Reserve Capacity (Part No. H7-EFB)
What size battery is in the Ram 1500 5.7 Hemi?
DieHard Gold – Battery: H7 Group Size, 800 CCA, 1000 CA, 140 Minute Reserve Capacity (Part No. 94RH7)
What kind of battery is in a Dodge Ram?
EverStart Maxx Lead Acid Automotive Battery, Group Size H7 / LN4 / 94R 12 Volt, minimum 790 CCA.
What battery fits a Ram 1500?
What kind of car battery does a RAM 1500 use? You will need a 12V lead acid car battery for your RAM 1500. Century, Panasonic and Varta make batteries for your RAM 1500 and we also have other brands.