The 12Ah lead-acid batteries is a small-capacity model with compact size, light weight and high cost performance. It features mild discharge current and is suitable for various low-power small devices. Focusing on short-term stable power supply, it is widely applied in corridor emergency lights, household fire alarms, small access control power supplies and portable emergency lighting. With fast charging, simple maintenance and stable floating charging performance, it fits scenarios of long-term standby and low-frequency use. As a basic standby power source, it meets the basic power needs of daily security and emergency lighting, serving as a mainstream power supply solution for civil small emergency equipment.