Features and advantages 1 Nano amorphous isolated fully symmetrical transformer ensures the minimum voltage difference 2 American ultra low internal resistance MOS devices constitute an ultra low dynamic impedance inverter circuit Achieve high power balance 3 The control and management of intelligent MCU chip realize automatic self balancing 4 Automatically detect the minimum voltage of the battery stop working when the battery energy is low and protect the battery from power loss 5 Overcurrent fuse resistance at each series input end to ensure safety 6 With automatic manual trigger dual mode 7 Manual forced equalization timing off function easy to use 8 Miniature circuit breaker device for over temperature and over current protection control the instantaneous abnormal excessive current disconnect at over temperature protect the normal and continuous balance of the battery pack Package Included 1 X 504A Active Balance Boardor1 X 513A Active Balance Boardor1 X 524A Active Balance Boardor1 X 824A Active Balance BoardNote You can choose any modelYou can choose any model and we will send you the model you selected