Specification: Item Type: Mini UPS Material: ABS and PC Battery: 4 x Battery, Battery Capacity: 10400mAh(4 x 2600mAh) Input Voltage: 9VDC 2A maximum USB: 5VDC 2A Output Voltage: 9VDC (1A), 12VDC (1A) Output Power: 18W maximum Compatible: Compatible with 95% of the market router, optical modem, security monitoring, MP3, MP4 and other digital products charging uninterrupted use How to Use: Operating Instructions: 1. Hold down the power button for 2?3 seconds to power on the UPS. 2. Fully the UPS before connecting. When connecting DC, the power adapter indicator blinks. It is charging. When charging, the power indicator will indicate battery capacity from 25?100 percent. 100 percent fully charged. After fully charging, disconnect the DC power adapter. 3. Once the battery backup mode is activated. When the battery run out, the power indicator will be turned off from 100 percent to 25% respectively. When the indicator to 25%, it indicate that the battery is low, and you need to press the power button for 2?3 seconds to turn off the UPS. PackageList: 1 x Power Supply 2 x DC Line 1 x User Manual