▎ 摘　　要

NOVELTY - The stationary power backup system has a main power source comprises a primary metal air battery is a graphene-based metal air battery (GMAB) for generating electrical power. The auxiliary power sources (110) are charged with electrical power generated from GMAB to supply electrical power to a load, are connected to the load through switching circuit. The output of auxiliary power source is fed to load through an inverter (109). One auxiliary power source is in a charging condition with the electrical power from GMAB, while the other auxiliary power source is in a discharge condition to supply power to the load at any instant. A state of charge (SoC) is monitored continuously. The auxiliary power source supplying power to the load is cut off with the help of switching circuit. The second auxiliary power source is switched on to supply electrical power to load and the first auxiliary source is charged with the power from GMAB when the auxiliary power source reaches a pre-set SoC level. USE - Stationary power backup system for energy storage and power backup for uninterrupted power supply. ADVANTAGE - The uniform distribution of electrolyte helps in maintaining a consistent power output from all the cells in the metal-air battery. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a hybrid power backup system with a graphene -based metal air battery. Pump (103) Floor (106) Common drainage system (108) Inverter (109) Auxiliary power source (110)