How Long Does It Take To Charge Hummer EV

The resurrection of the Hummer as a fully electric vehicle comes in two flagship forms: the rugged EV Truck (a pickup bed variant) and the sleek EV SUV (a closed-body design), both powered by GMC’s Ultium platform. While both share the same ambition—to blend luxury with astonishing performance—they differ in battery layout, weight, and real-world range nuances.

Hummer EV Battery Size and Range

Both Hummer EV models boast a massive ~212 kWh battery, positioning them among the largest packs offered in any consumer EV. Despite this similarity, the SUV’s more aerodynamic, closed-body design grants it slightly better efficiency, translating to a range of up to 329 miles, whereas the Truck, with its open bed and heavier structure, is rated closer to 314 miles under ideal conditions. These differences become apparent during real-life use, especially on highways or in varied weather.

How Long Does It Take To Charge a Hummer EV?

Level 1 Charging (120V Household Outlet)

Level 1 charging uses a standard household 120-volt outlet, making it the most accessible but slowest charging method. For a vehicle the size of a Hummer EV—with one of the largest battery packs in the consumer EV market—charging from empty to full on Level 1 can take well over 4 days. This option adds only about 3–5 miles of range per hour, making it suitable only for very light daily driving or as a backup when faster charging options are unavailable.

Level 2 Charging (240V Home or Public Station)

Level 2 charging is the most practical choice for daily Hummer EV ownership. Using a dedicated 240-volt circuit, Level 2 stations can deliver up to 19.2 kW of power (with a 48-amp charger), replenishing approximately 40–60 miles of range per hour. This means you can fully charge a near-empty battery in about 10–12 hours, typically overnight. It offers a balanced combination of speed, cost-efficiency, and battery health preservation, making it the go-to for home charging.

DC Fast Charging (Public High-Speed Stations)

Both the Hummer EV Pickup and SUV feature 800-volt architecture enabling charging speeds of up to 350 kW at compatible stations. This allows the vehicle to gain about 100 miles of range in just 10 minutes. Charging from 20% to 80% typically takes around 40 minutes, making DC fast charging ideal for road trips and long-distance travel.

Hummer EV and Level 2 EV Charger Compatibility

The GMC Hummer EV—both the pickup and SUV—supports Level 2 charging through the industry-standard J1772 connection when using the included adapter. This makes it compatible with most high-quality Level 2 EV chargers available on the market. Owners can take advantage of up to 19.2 kW AC charging (on configurations equipped with the onboard 19.2 kW charger) when paired with a sufficiently powerful EV charger and a dedicated 240V circuit.

When selecting a Level 2 charger for your Hummer EV, it’s important to ensure that it can deliver the amperage your vehicle can handle—ideally 48A or higher for faster home charging speeds. The Hummer EV’s large battery pack benefits from higher-power chargers, reducing the time needed for a full recharge and making the most of overnight charging sessions.

Connectivity and Smart Features

The Hummer EV’s charging experience is enhanced by pairing with smart chargers that offer Wi-Fi or Bluetooth connectivity. These chargers allow for scheduling, energy monitoring, and integration with time-of-use electricity rates, helping owners reduce costs. Because the Hummer EV’s own onboard systems can work in conjunction with these features, a smart charger makes managing such a large-capacity battery far more convenient.

Recommended Level 2 Chargers

Emporia Level 2 EV Charger – A cost-effective, feature-rich option that delivers up to 48A, includes adjustable amperage settings, and offers robust app-based energy monitoring. Its integration with home energy systems makes it a strong choice for Hummer EV owners looking to optimize charging schedules and costs.
Tesla Universal Wall Connector – Ideal for households with multiple EVs, this charger can power both Tesla and non-Tesla vehicles (including the Hummer EV) without a separate adapter. With up to 48A of output, weatherproof construction, and Wi-Fi connectivity for updates and monitoring, it provides high performance along with future-proof flexibility.

By selecting a high-quality Level 2 charger that matches your Hummer EV’s charging capabilities, you can reduce charging times, improve battery management, and ensure you’re always ready to take full advantage of the vehicle’s range.

Optimizing Hummer EV Charging: Best Practices for Performance and Longevity

Maximizing the efficiency, performance, and lifespan of your Hummer EV battery involves more than just plugging in whenever possible. Charging strategies should take into account battery chemistry, energy costs, and driving patterns.

For most drivers, keeping the battery between 20% and 80% for everyday use helps minimize long-term degradation. Full 100% charges should be reserved for situations where you require maximum range, such as extended trips. Level 2 charging at home remains the most battery-friendly solution, offering consistent, moderate charging speeds without excessive heat buildup.

Where available, scheduling charging sessions during off-peak electricity hours can significantly reduce your operating costs. Many smart chargers—and the Hummer EV’s onboard systems—allow you to program start and stop times to align with utility rate plans. Additionally, the Hummer EV’s thermal management system and preconditioning features allow you to warm or cool the battery before departure while still connected to the charger, preserving range and optimizing performance in extreme weather.

While DC fast charging is invaluable for travel flexibility, it should be used strategically. Frequent high-power charging generates more heat and can accelerate battery wear. As a rule, rely on Level 2 charging for daily needs and reserve DC fast charging for when you need to minimize downtime during long trips.

Hummer EV Charging Made Simple With ChargerPro

A high-capacity EV like the Hummer demands a charging setup that’s both powerful and reliable. Whether you own the bold Pickup or the refined SUV, charging times vary depending on the method: Level 1 for emergency use, Level 2 for daily convenience, and DC fast charging for rapid on-the-go top-ups. Combining a powerful home Level 2 setup with occasional DC fast charging offers the best balance of speed, cost, and battery preservation.

ChargerPro specializes in Level 2 home charger installation tailored to your electrical system. Our team handles the full process—including site assessment, panel load calculations, permitting, and inspection—ensuring your charger operates at peak performance and complies with all local electrical codes. We offer expert installation, transparent pricing, and a track record of working with large-battery EVs like the Hummer.

With a Level 2 charger, your Hummer EV will be ready each morning with a healthy battery and full range, without the uncertainty of relying on public charging availability.

Chat with one of our experts, or get an instant quote and see how seamless charging can transform your ownership experience.