The 3-7S universal intelligent BMS protection board is designed specifically for lithium batteries and is suitable for ternary lithium, lithium manganese oxide, and lithium iron phosphate battery cells. Adopting a universal low edge (negative control) driving scheme, using MCU and AFE two in one chips, providing ultimate cost-effectiveness while offering multiple safety protections, effectively enhancing the safety of lithium battery products. Support UART communication to meet users' regular communication application needs.