Batteries provide power to many different applications across a wide range of industries. While the sheer volume of consumer mobile devices tends to keep the spotlight on low voltage Li-ion powered applications, high performance and high reliability industrial, medical and military applications require a variety of battery chemistries with a variety of battery pack voltages. Some of these applications require a battery for portability, while others simply use a battery for back-up requirements. In both cases, monitoring battery health and system performance is critical to ensure reliable and robust operation. In this video, we will show how the LTC4015 battery charger can charge Li-ion, LiFePO4 and lead-acid batteries.