8800mAh UPS Battery Backup, Portable Uninterruptible Power Supply, Battery Backup UPS, USB Interface UPS, for Router Modem Camera Phone DSL BUILT IN BATTERY: This uninterruptible power supply has built in batteries with 8800mAh capacity, providing longer endurance, standard USB port, which can be used as a regular power bank. 1 INPUT METHODS: This mini UPS has 1 input methods, 9V DC adapter, with a maximum output power of 18W, which is efficient and practical. MAIN PURPOSE: Small uninterruptible power supply for power outages, with battery backup mode to ensure that your device can still use the network in the event of a power outage. Spec: Item Type: Uninterruptible Power Supply Material: ABS, PC Battery: 4 x Battery, Capacity: 8800mAh (4 x 2200mAh) (built in battery) USB: 5VDC 2A Output Power: 18W Maximum Application: Compatible with 95% of the router on the market, for security monitoring, MP3, MP4 and other digital products charging uninterrupted use How to Use 1. Press and hold the power button for 2‑3 seconds to power on the UPS. 2. Please fullythe UPS before connecting. When connecting DC, the power adapter indicator blinks, and is charging. When charging, the power indicator will indicate the battery capacity from 25 to 100 percent. After fully charging, disconnect the DC power adapter. 3. once the battery backup mode is activated, when the battery is exhausted, the power indicator will be turned off from 100 to 25 percent respectively. When the indicator blinks to 25%, it indicates 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 Uninterruptible Power Supply 2 x DC Cables 1 x User Manual