ZF Friedrichshafen AG and Continental have signed an agreement for cooperation related to the development and production of commercial vehicle hybrid drives. ZF, as the systems supplier, is in charge of the system integration for the hybrid system; the latter is made up of a parallel hybrid transmission by ZF, a lithium-ion battery accumulator, and system electronics by Continental. ZF is also responsible for system integration and controlling. The cooperation stipulates that Continental—already using Li-ion batteries for passenger car volume production applications—further develops the battery technology with ZF. Volume production is scheduled for 2011.