The basic function of brts-100 series power system comprehensive performance testing and maintenance system is to provide performance testing, repair, maintenance and other services for power battery pack and its central parts, and can expand the function test of PDU / PEU. Its basic functions are: on board detection of battery pack, residual energy detection of battery pack, insulation test, air tightness test, repair of battery pack, maintenance of battery pack, calibration and calibration of BMS, etc.