Century EFB Batteries Century is one of Australia’s best-known brands. The SiS Active models are specifically designed for modern vehicles with ISS installed, and are capable of withstanding the additional demands a Stop/Start system places on a battery. They are capable of rapid recharges and will accommodae the power requirements need to run electrical accessories while the engine is switched off. They must also deliver the cranking capacity to start the vehicle in a fraction of a second when the brake is released.