The battery supplies the electric machine during electric propulsion. When driving with the combustion engine and during regenerative braking, the battery is charged by the electric machine.

With its partner Samsung SDI, Bosch has founded the joint-venture company SB LiMotive. Samsung SDI is experienced and successful in the large-series manufacture of high-quality lithium-ion cells and systems (Li-Ion). Bosch provides the joint venture with decades of automobile experience. With this shared know-how, SB LiMotive develops, manufactures and markets reliable, powerful and high-quality lithium-ion batteries with battery management systems at competitive prices for use in vehicles.