The 12V33Ah lead-acid batteries is widely used for standby power supply of small and medium-sized medical equipment and intelligent electromechanical devices, compatible with medical monitors, portable first-aid equipment, intelligent access control and automatic control equipment. In medical scenarios, it can supply power continuously during municipal power failures to ensure uninterrupted operation of basic medical equipment and win precious time for emergency diagnosis and treatment. In the field of civil intelligent equipment, it provides emergency power for community access control, building automatic control and small industrial control equipment to avoid equipment shutdown and out-of-control. With stable and interference-free power supply, it meets the power supply standards of medical and civil equipment, featuring moderate size and convenient installation, suitable for standby power demand of various precision low-voltage equipment.