If you own or plan to purchase a GMC Hummer EV, a level 2 home charger is essential. The 2022 GMC Hummer EV, including the forthcoming SUV variant, is notable for its large size and high-performance capabilities. To support its substantial battery, GMC has equipped the Hummer EV with a 205 kWh battery, although some estimates suggest it could be even larger.
Charging a Hummer EV with a level 1 charger, which operates on a standard 120-volt circuit, is impractically slow. For comparison, a Mini Cooper S E with a 33 kWh battery can take around 16 hours to charge fully using a level 1 charger. In contrast, charging the Hummer EV’s 205 kWh battery using a level 1 charger could take approximately 4.2 days, or potentially up to a week.
A level 2 home charger, such as a 32 amp unit from brands like JuiceBox, can significantly reduce charging time, with GMC estimating around 24 hours for a full charge. For even faster charging, an 11.5 kW charger, which operates on a 60 amp circuit, can reduce the charging time to about 16.5 hours. These figures are provided by GMC, and actual charging times may vary.
Given the size of the Hummer EV’s battery and the power demands of moving such a large vehicle, a level 1 charger should only be used in emergencies or for short trips. For regular use, upgrading to a level 2 home charger is recommended to ensure more practical charging times.
In fact, if you want the fastest home recharge time, you’re going to want a charger capable of delivering 19.2 kWs of sustained juice. That means you’re going to need an EVSE that supports an 80 amp circuit. It still means over 10 hours to completely recharge from empty, but it’s worth the upgrade if you’re driving the car regularly and need longer recharges at home.
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