The basic functions of the BRTS-100 series comprehensive performance test and maintenance system of power system are to conduct inspection, repair, maintenance and other services for power battery pack and its core parts, and expand the function test for PDU /PEU. Its basic functions include: on board inspection of battery pack, residual energy detection of battery pack, insulation test, air tightness test, battery pack repair, maintenance of battery pack, BMS calibration and so on.