SMT-H03S01M-SMTV1.3 3 series lithium battery charging board is a customized power battery protection board for 3-string batteries. This scheme adopts the combination of software and hardware, with charging management / fast charging function, which can realize three cell overcharge protection, input high voltage protection, charging high / low temperature protection, etc.; when discharging under voltage and discharging high / low temperature protection, the charging board will give the corresponding signal to cooperate with the controller, and the controller will execute the corresponding shutdown action after receiving the signal to prohibit battery discharge.