Time and again, the number one complaint we hear about EVs (besides non-existent mandates) is driving range. To some, even a Tesla Model S doesn’t have enough range, even though versions of it now top 400 miles on a charge. Even the affordable Chevrolet Bolt gets 259 miles. What mileage would be enough for these naysayers? 500 miles? 600? How about 752 miles without needing a charge?

Our Next Energy—stylized as ONE and based out of Novi, Michigan—has achieved just that using a battery the same size as the Tesla Model S P100’s battery pack. Dubbed “Gemini,” the battery pack employs ONE’s own battery management and controls, and it was installed in an otherwise unmodified the Model S.

The Trip

According to ONE, its upgraded Tesla Model S tester went on a road trip from its headquarters north up the “Mitten” of Michigan and back, traveling on highways and averaging about a speed of 55 mph. The semi-scientific trip hooked east over through Detroit using I-96 and then followed I-94 west to Ann Arbor before joining with State Route 52 to get back to I-95 and Lansing. Then the team took I-69 to stay on the west side before heading north on State Route 127 and merging with I-75 around Pere Cheney.

They continued north until they crossed over the Mackinac Bridge to get on State Route 2 for a bit before turning around somewhere close to Brevort. This time, they merged ba