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Battery Analog Front End Series is a battery protection chip series for series-connected batteries. It ensures comprehensive safeguards, including overcharge, overdischarge, overcurrent, short circuit, and temperature protection, along with cell balancing. The chips support cascading and offer various modes (ex: normal, low-power, fault-locking). With diverse specifications, they facilitate cell disorderly power-on for production. Some models support I2C communication, enabling flexible configuration of series cells and protection parameters. Users can select protection functions and control FET, enhancing application flexibility.