The MAX14921ECS+T with Battery Management High-Accuracy 12-/16-Cell Measurement AFEs from Analog Devices is a highly accurate battery monitoring system for 12 and 16 Li-ion/Li-polymer cell batteries. This device supports wide input ranges, adjustable measurement accuracy, integrated system level diagnostics, high-speed SPI interface, and protection features such as overvoltage, undervoltage, and cell balancing. The device can measure up to 16 Li-ion/Li-polymer cells with a resolution of 7mV. With a single +3.3V supply, it provides low power consumption (< 6mW), making this device suitable for portable applications. The integrated balancing current sink capability provides active cell balancing with a maximum current of 1A up to 7 cells in parallel. This device is rated from -40°C to +85°C and is AEC-Q100 qualified.