The new Sián FKP 37 is a technological tour de force, able to fire up incredibly strong emotions. The most extraordinary innovation is the hybrid system, which delivers maximum power with minimal weight. The innovative, lightweight mild-hybrid architecture uses a lithium-ion supercapacitor, which is three times more powerful than a battery of the same weight. It is a low-voltage 48V system, enabling peak currents of up to 600A. Powered by this current, the electric motor delivers engine torque directly to the rear wheels, and during braking uses the inertia to recharge the capacitor. The electrical power flow is symmetrical, for the same efficiency during the charge and discharge cycles, without overheating.