THE FASTEST (AND SLOWEST?) CHARGING EV WE'VE EVER TESTED! THE HUMMER EV HITS OVER 360KW PEAK

EV Channels Review

The Hummer EV charging experience presents a tale of two halves, delivering blistering peak speeds exceeding 360kW, yet struggling with a highly inconsistent and often disappointing charging curve. While the initial charge from 0-35% is exceptionally fast, averaging over 300kW, performance significantly degrades thereafter. The reviewer highlights a concerning dip in charging speed around the 65% mark, plummeting to as low as 14kW by 84% state of charge. This erratic behavior, potentially linked to thermal management or battery protection strategies, makes extended charging sessions frustrating. Despite the massive 212kWh battery, the reviewer achieved a respectable 318 miles of range at 70mph in cool conditions. The vehicle's charging strategy, which involves switching the double-stacked battery from parallel to series to double its voltage (350-400V to 700-800V), is an engineering marvel for cost-effectiveness across platforms, but it contributes to the complex charging behavior. The lack of an 80A onboard charger further exacerbates slow home charging. Ultimately, the Hummer EV's charging infrastructure demands are high, making it best suited for road trips where 65% is the target charge before seeking the next high-power station.