A system for providing power to a cordless appliance is provided. The system includes a coupler, and a complementary coupler on the appliance is also present. The coupler has symmetrically configured concentric power terminals, which are connected to a main power source in use, and a magnetic coupling region disposed concentrically around an outer periphery of the power terminals. The complementary coupler has complementary power terminals configured to engage with the symmetrically configured concentric power terminals of the coupler, and an engaging region disposed concentrically around an outer periphery of the complementary terminals. A magnetic force provides a mutual attraction between the magnetic coupling region and the engaging region, thereby engaging the power terminals and complementary power terminals and establishing an electrical connection between the coupler and the appliance.