Integrated charger ICs are the heart of modern power-management solutions, combining core topologies—linear, buck, and buck-boost—with smart charge-phase control to achieve rapid, reliable battery replenishment. This chapter will present charging methods, end-of-charge-detection techniques, and charger circuits for use with Nickel-Cadmium (Ni-Cd), Nickel Metal-Hydride (Ni-MH), and Lithium-Ion (Li-Ion) batteries. Because the Ni-Cd and Ni-MH cells are similar in their charging characteristics, they will be. Explore the role of battery chargers within Integrated Circuits (ICs) and Power Management ICs (PMICs). Learn about types, features, applications, and how they enhance energy efficiency in modern electronics. By seamlessly handling trickle, pre-charge, constant-current, and constant-voltage. Renesas' battery charger ICs are purpose-built to support rechargeable 2, 3, or 4-cell battery configurations, offering unparalleled flexibility for a wide range of applications. These solutions incorporate cutting-edge technologies like hybrid power boost (HPB), narrow output voltage DC (NVDC). Efficient and safe charging of lithium-ion batteries is essential for maximizing their lifespan and performance. With DPPM, the system can obtain power immediately once the input source is applied, even with a.