Electric trucks and SUVs have pushed battery capacity far past what a typical EV needs, trading efficiency for raw range and towing muscle. Full-size GM trucks now share a 205-kilowatt-hour pack across three separate nameplates, while GMC’s own Hummer twins occupy both ends of the size spectrum. Here are ten EVs sold in America carrying the biggest battery packs on the market.
1. GMC Hummer EV Pickup: The Biggest Pack on Sale
The GMC Hummer EV Pickup runs the largest battery pack sold in America, an Ultium unit that stores 212.7 kWh usable. GMC built the truck on General Motors’ dedicated Ultium electric-truck architecture, reviving the Hummer name as a full-size electric pickup rather than the gas-burning military-derived SUV it once was.
That much stored energy adds enough weight to drop EPA combined efficiency to just 47 MPGe, among the lowest ratings of any electric pickup on sale, though the tradeoff buys drivers extended off-road range and heavy-duty towing capability that smaller packs cannot match.
2. Chevrolet Silverado EV Max Range: Same Pack, Three Trucks
The Chevrolet Silverado EV Max Range shares its 205-kWh battery pack with two other General Motors electric trucks, the Silverado EV RST and the GMC Sierra EV Denali. All three ride on the same Ultium-based platform General Motors developed for its full-size electric pickups.
Sharing one large pack across three separate trucks lets General Motors spread engineering and battery-sourcing costs while still giving buyers a full-size electric pickup rated for long-haul work-truck duty rather than a smaller, commuter-focused pack better suited to daily errands.
3. GMC Sierra EV Denali Max Range: 460 Miles From One Charge
GMC’s Sierra EV Denali Max Range trim carries a 205-kWh pack rated at 460 miles of range, the same capacity found in the Chevrolet Silverado EV and Cadillac Escalade IQ. A lower Extended Range trim trades down to a smaller 170-kWh pack for buyers who need less range.
The two-tier lineup lets GMC price the Sierra EV below its maximum range while reserving the largest pack, and the longest EPA-rated distance, for the range-topping Denali configuration that competes directly with rival luxury electric pickups.
4. Cadillac Escalade IQ: Cadillac’s Flagship Electric SUV
Cadillac’s own spec sheet lists the Escalade IQ’s battery capacity at 205 kWh, matching the Silverado EV and Sierra EV Denali it shares GM’s Ultium platform with. That pack feeds power through a CCS1 fast-charging port.
Cadillac positions the Escalade IQ as its flagship electric SUV, pairing the full-size Ultium pack with three-row seating and the brand’s luxury trim rather than the utilitarian cargo bed of its GMC and Chevrolet pickup siblings, aiming the model at buyers who want maximum range without giving up cabin space.
5. GMC Hummer EV SUV: The SUV Twin’s Smaller Pack
The GMC Hummer EV SUV pairs a 170-kilowatt-hour battery with up to three motors in its range-topping 3X trim, one of several trim levels GMC offers beneath that top configuration. That pack is smaller than the one in its Hummer EV Pickup sibling, which stores more than 40 additional kilowatt-hours.
The SUV variant trades some of the pickup’s bed-hauling capability for enclosed cargo space, giving buyers the same Hummer styling and off-road hardware in a more conventional SUV body at a smaller battery capacity than the Pickup carries.
6. Rivian R1T Max Pack: Rivian’s Biggest Truck Pack
Rivian’s Max Pack battery holds 149 kWh in the R1T pickup, well above the 135-kWh Large pack Rivian offers as a step-down option. The Max Pack sits at the top of a lineup that also includes a smaller Standard pack for buyers focused on price.
That 14-kWh gap between the Large and Max packs buys meaningfully longer EPA-rated range, an advantage that matters most for drivers who tow heavy loads or plan long trips away from fast chargers, since a bigger battery buffers against the extra draw those tasks add.
7. Rivian R1S Max Pack: First Seven-Seat EV Past 400 Miles
The Rivian R1S Max Pack carries the same 149-kWh battery as the R1T, and InsideEVs reports it made the R1S the first seven-seat electric SUV rated at 400 miles. That combination of seating capacity and range set it apart from smaller three-row competitors when it launched.
Rivian offers the R1S with three rows of seating standard, unlike many electric SUVs that reserve a third row for an option or skip it entirely, so the Max Pack’s range lets a full seven-passenger load travel farther between charges.
8. Lucid Gravity Grand Touring: Smallest Pack, Fastest Charging
The Lucid Gravity Grand Touring carries a comparatively compact 123-kWh battery on a 926-volt platform, according to Lucid’s own release. That higher voltage architecture lets the pack accept charging speeds up to 400 kW, among the fastest of any EV on this list.
Lucid’s engineering approach favors efficiency and higher voltage over sheer pack size, so the Gravity needs fewer stored kilowatt-hours than the full-size GM and GMC trucks on this list to still compete on range and rapid charging speed.
9. Tesla Cybertruck: The Number Tesla Won’t Confirm
Tesla has never published an official battery capacity for the Cybertruck, unlike most competitors on this list, but EPA filing figures work out to 122.4 kilowatt-hours. Independent outlets derived that number from the same regulatory paperwork every automaker must submit to certify range.
Tesla’s silence on pack size fits its broader pattern of withholding detailed specs across its lineup, leaving outlets and owners to reverse-engineer numbers from EPA documents rather than a company-issued spec sheet the way several other automakers on this list openly provide theirs.
10. Mercedes-Benz EQS Sedan: A Bigger Battery Arrives
Every 2025 Mercedes-Benz EQS Sedan ships with a brand-new battery rated at 118 kWh, a jump Mercedes built into the model-year update across the entire EQS Sedan lineup rather than reserving it for a single top trim, according to Automotive Powertrain Technology International.
The EQS is the only sedan on a list otherwise dominated by full-size trucks and SUVs, and Mercedes built the larger battery into every 2025 trim of the model rather than limiting it to a single top-of-range configuration.
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