Range anxiety is still the main reason why many people are wary of buying electric vehicles, but what if there was a battery capable of offering 752 miles (1,210 km) of range to an EV the size of a Tesla Model S?

Well, that's exactly what Michigan battery technology company Our Next Energy (ONE) claims to have. Its proof-of-concept battery powered an electric vehicle for 752 miles without recharging.

The vehicle, a Tesla Model S retrofitted with ONE's prototype battery, completed a road test across Michigan in mid-December with an average speed of 55 mph (88 km/h). The test car achieved 752 miles on a full battery charge and the results were validated by a third party using a vehicle dynamometer.

Later on, the Model S was put on a dynamometer at 55 mph and it ran for an impressive 882 miles (1,419 km) on a charge.