Key benefits and features - High discharge efficiency The higher the battery series voltage, the discharge efficiency approaches 100 percent. - Seamless uninterrupted UPS A rechargeable switching power supply with its own constant current circuit; no special charger for lithium battery needed; zero switching time delivers an uninterrupted UPS. Includes a charging status display for simple, intuitive monitoring. - Automatic, unattended operation Once wired, it automatically manages charging and discharging year round with no manual intervention. The lithium battery uses fixed power distribution and constant current charging to ensure stable load operation, unaffected by battery charging or dynamic load changes. - Voltage matching and zero voltage difference Input voltage equals working voltage equals battery charging voltage equals full battery voltage, aiming to eliminate voltage difference and optimize performance. - Stable power balance and safety Adapter power equals battery charging power plus load power, creating a stable, safe and efficient system. The UPS integrates load and charging box interaction to form a virtuous cycle. Measured efficiency example: 97.3 percent, calculated as (11.1V - 0.3V) / 11.1 * 100%. - Practical performance details System uses a 11.1V nominal lithium battery (3S) with fixed distribution and constant current charging to support reliable operation. Use scenarios - Home or office backup power Protect routers, NAS, computers, and other critical devices from outages with unattended, automatic charging and discharging. - Remote or unstable power environments Provide uninterrupted power for CCTV, sensors, or other equipment in locations with intermittent mains, without manual intervention. - Portable or compact power solutions Use as a compact UPS in situations where reliable, self-managed charging and discharging are essential for load stability. Note: This description remains faithful to the original model characteristics, specifications, and functions without adding new features.