SMT-S4S12M-SMTV2.33A 4 seires lithium battery management system is a customized power battery management system for 4-string lithium iron phosphate batteries developed by Shenzhen saimeida Electronics Co., Ltd. This scheme adopts pure MCU scheme, which can realize overcharge protection, over discharge protection, over-current protection, short circuit protection, over temperature protection and other protection functions, automatic charging equalization function, battery residual capacity monitoring function, with UART communication interface, which can communicate with other output display terminals to transfer relevant real-time data, and the maximum continuous current is 10A