PaddockSpy-Grand Prix Blog

A KERS-related failure on Kimi Raikkonen's car in opening practice at Sepang allowed us to see how the system's large battery is packaged in a carbon fibre box within the F60's chassis. It is located in a cavity under the chassis, the presence of which means a significantly smaller fuel tank than would otherwise be possible. With the base of the battery box now effectively forming a second floor, it also means the fuel is higher in the chassis, raising its centre of gravity.

source: www.formula1.com