What is the battery capacity of the Chevy Silverado?
In short, there are two Silverado models to consider: the gas-powered truck has only a standard 12‑volt battery, while the Silverado EV uses a large Ultium battery pack of about 200 kWh capable of roughly 400 miles of driving on a full charge in top configurations.
The question spans two distinct vehicles in Chevrolet's lineup. Below, we separate the battery details for the conventional gasoline Silverado and the electric Silverado EV, and then explain how size translates to range and charging capabilities.
Gasoline-powered Silverado: battery capacity
The gasoline or diesel Silverado uses a conventional 12-volt battery to start the engine and power electronics. There is no high‑voltage traction battery with a kilowatt‑hour rating in these models, so the battery specification you’ll see publicly is the 12-volt unit that supports electrical systems rather than energy storage for propulsion.
Chevrolet Silverado EV: battery capacity
The electric Silverado is built on GM's Ultium battery platform. Its primary battery pack is a large 24‑module Ultium pack with about 200 kWh of energy storage, designed to deliver substantial driving range on a full charge. Depending on trim and drivetrain, EPA estimates place the range around 400 miles or more for top configurations. The battery is covered under GM’s Ultium warranty, typically 8 years or 100,000 miles in the United States.
Key specifications and charging considerations
Below are the essential battery-related facts for the Silverado EV, which help translate capacity into real-world use.
- Battery type: Ultium lithium‑ion pack (GM modular design)
- Nominal capacity: about 200 kWh (24-module pack)
- EPA range: up to roughly 400 miles for higher-spec variants; actual range varies by trim, drivetrain, payload, and conditions
- Charging: supports DC fast charging and home AC charging; charging rate depends on charger and conditions
- Warranty: high-voltage battery typically covered under an 8-year/100,000-mile warranty in the U.S.
Understanding battery size helps gauge how far you can go between charges, how quickly you can recharge, and what you might pay for charging at home or on the road. The Silverado EV's large 200 kWh pack is designed to offer substantial driving range for a full-size pickup, while real-world range will depend on factors like weather, terrain, and payload.
Summary
In the Chevrolet lineup, the term "battery capacity" applies differently: conventional Silverado models rely on a 12‑volt battery for electronics, while the Silverado EV uses a 200 kWh Ultium pack capable of around 400 miles of range in ideal conditions. Always check the latest Chevrolet specs for the exact trim you’re considering, as ranges and configurations can change with model year updates.
Notes and updates
Data reflects information available as of 2024–2025. For the most current specifications, consult Chevrolet's official site or a dealership, as battery size, range, and charging capabilities can vary by model year and regional market.
What is the normal battery voltage for a Chevy Silverado?
around 12.6 volts
Voltage Test Readings
A healthy car battery should typically hold around 12.6 volts when fully charged and not under load. You can test this yourself if you know how and have the equipment, but your Chevy dealer will also do this for you when you come in for routine maintenance.
What size battery is in the 2021 Silverado 1500?
Duralast Group Size 94R H7 Battery H7-DL.
How big is the battery in a Chevy Silverado?
The most common battery sizes for a Silverado are Group 48 (H6) and Group 94R (H7). The Group 48 is a good general-purpose option, while the Group 94R provides higher cold-cranking amps and reserve capacity, which is better for colder climates or vehicles with many accessories.
- Group 48 (H6): A compact option suitable for standard daily use.
- Group 94R (H7): Offers higher cold-cranking amps (CCA) and a greater reserve capacity, making it a better choice for cold weather or if you use many electrical accessories like heated seats or a high-powered audio system.
- Other possibilities: Some models may use other battery sizes, such as Group 78. It is best to verify the correct size for your specific model year by checking the owner's manual or your current battery.
What is the best battery for a Chevy Silverado 1500?
The best battery for a Chevy Silverado 1500 depends on your specific model year, so first confirm the correct BCI group size (like H6 or 34/78). For performance, an Absorbed Glass Mat (AGM) battery is often recommended for its vibration resistance and deep discharge capabilities, especially if you have many accessories or drive in rough conditions. Look for batteries with a high Cold Cranking Amps (CCA) rating, particularly if you live in a cold climate, and a good Reserve Capacity (RC) for powering accessories when the engine is off.
This video reviews the best truck batteries of 2025, including features like AGM technology and vibration resistance: 54sAuto GearYouTube · Feb 21, 2022
Key factors to consider
- Battery Group Size: This is the most crucial factor for a proper fit. Check your owner's manual or the old battery to find the correct group size for your Silverado's model year and engine. Newer models may use an H6/48, while older ones often require a 34/78.
- Battery Type:
- AGM (Absorbed Glass Mat): A sealed, maintenance-free option that is more robust against vibration and deep discharges, making it ideal for trucks.
- Enhanced Flooded Battery (EFB): A good middle-ground option that offers reliable performance.
- Cold Cranking Amps (CCA): Measures the battery's ability to start the engine in cold weather. If you live in a region with freezing winters, choose a battery with a higher CCA rating to ensure reliable starting power.
- Reserve Capacity (RC): This indicates how long the battery can power your truck's accessories if the alternator isn't running, such as in stop-and-go traffic. A higher RC is beneficial if you use many electronic accessories.
- Brands: Popular and reliable brands include Optima, DieHard, and Duracell. Some batteries, like the Everstart from Walmart, are also noted for good performance, according to this YouTube video.
