General description No welding is required for this UPS Power Supply Box, allowing for easy disassembly and replacement of batteries. It features a DC constant voltage UPS function that manages automatic charging and discharging without manual intervention. This device supports multiple output functions, covering commonly used voltages such as 5V, 9V, and 12V, making it suitable for applications like optical tracing, routers, and monitoring cameras. Technical specifications Installable battery capacity: 6*3.7V*3400mAh = 74 watt hours (battery prepared by user) Rated output power: 12V x 5A = 60W (actual output power depends on the battery) Output voltage: 12V (3-5A), 9V (1A), USB (5V, 2-3A) Operating temperature range: -20℃ to 60℃ DC interface standard: DC 5.5, 2.1mm (positive inside, negative outside) Protection circuit parameters: overcharge protection at 4.25V*3; low voltage protection at 2.75V*3; overcurrent detection voltage at 0.1V ± 0.025V Compatibility and accessories