It turns out the very British 2014 Hybrid Range Rover is powered by American batteries.

Johnson Controls is the supplier of lithium-ion batteries for the 2014 Range Rover Hybrid.

The American company said production of the cells and complete battery systems is underway at Johnson Controls’ manufacturing facility in Holland, Michigan.

Hybrid batteries are a part of the company’s full-spectrum of energy storage solutions for vehicles to help automakers meet increasing regulations for fuel efficiency and emission reductions across their fleets, said Johnson Controls.

“As the first company in the world to produce Lithium-ion batteries for mass production hybrid vehicles, we are excited to work with Jaguar Land Rover,” said Lisa Bahash, vice president and general manager of the Original Equipment Group for Johnson Controls Power Solutions.

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The Hybrid Range Rover vehicles are being manufactured at Land Rover’s advanced manufacturing center in Solihull, England.

The Range Rover Hybrid powertrain combines Land Rover’s 3.0-liter SDV6 diesel engine with a 35 kilowatt electric motor and an eight-speed ZF automatic transmission. The system allows the driver to select from three different drive modes to maximize performance or efficiency, and is capable of delivering 26 percent lower CO2 emissions (169g/km) and 6.4 l/100 kilometer (36.75 U.S. mpg).

The complete hybrid system, including Johnson Controls’ lithium ion battery pack, inverter and electric motor, weighs less than 120 kilograms (264.5 pounds).