Growing expectations of industrial, medical and many other applications for energy efficiency, small form factor, reliable operation in challenging environments and data communication drives the development of modern battery- and power management systems. This presentation demonstrates how advanced technologies like WBG semiconductors and inductive power transmission can help to meet customer expectations. The talk focuses on new architectures used by etatronix which enable fast voltage regulation, a variety of voltage ranges, power levels and bi-directional power transfer. We will review typical applications which also use data interfaces like PMBus, SMBus and CAN for host and smart battery communication.