How Tecnobosque frames the subject

Nameplate battery capacity is not the same as usable AC energy. Conversion losses, reserve state of charge, temperature, load profile and inverter limits all affect runtime. Motors and compressors may have starting surges far above steady demand. Critical-load planning begins by deciding which services must remain available—communications, air filtration, refrigeration, lighting or pumping—then testing whether energy capacity and power output meet both sustained and peak requirements.