Valve-regulated sealedlead-acid batteriesare core standby power supplies for fire emergency lighting, complying with national fire protection standards. Compared with lithium batteries, they have extremely low thermal runaway risk, excellent high-temperature resistance and flame retardancy, with no explosion hazard during fire power cuts. Maintenance-free and adaptable to high and low-temperature building environments, they can supply stable power for over 90 minutes after blackouts, sustaining evacuation indicator lights and emergency lamps to guide evacuation. Featuring low cost and strong compatibility, they are widely used in malls, residences and underground garages, with low operation cost for daily fire emergency power supply.