Most auto makers have already announced plans to have a majority of new vehicles equipped with Start-Stop or similar technology within the next three to five years. Our battery supply contracts for the Ford F-150 and Chevy Malibu underscore this trend, which predicts about 9 million Start-Stop vehicles will be on the road in the US by 2020.

—Petar Oklobdzija, vice president and general manager Original Equipment, Americas, Johnson Controls

Start-Stop enables up to 5% fuel economy savings over a conventional vehicle. The technology automatically shuts off the engine when the car is idle and restarts it when the driver's foot leaves the brake pedal. During this time, the vehicle’s electrical systems—from entertainment to lights—use energy from an advanced lead-acid battery rather than the gas-powered engine, thus saving fuel.

The global Start-Stop market for new vehicles could reach 53 million annually by 2020, the company said.