POE USB Mini UPS uninterruptible power supply is a standby energy storage power supply. Used safe and environmental lithium cells, credible and stable PCB, trickle/constant-current/ constant-voltage lithium battery charging BMS, Created by high performance and efficiency DC-DC, boosting and switching circuit. This mini UPS with perfect over-charged, over-discharged, over-current and short-circuit protection. Battery18650 li-ion 6000MAH or 8800mAh cells Battery life:500times/cycle Capacity:22.2Wh 32.56WH (can be customized)Model: Mini UPS Protection: Overload discharge and overcharging Weight: 0.4 kg Type: Line interaction Application: Security/Monitoring/Alarm Capacity: 17WH 21WH Output frequency: 60/50Hz+/_ 1Hz Input voltage: 110/120/220/230/240VAC Output voltage (optional): DC12/DC5V/DC24V/DC9V Transmission time: typical 2-6ms Waveform: corrected sine wave Certification: CE/ROSH/MSDS/UN38.3 Battery type: Lithium battery 6600mAh/8800mAh/supports customization Color: White/Black Backup time: 8-16 hours depending on load Mini Ups is a DC uninterruptible power supply which can store power. It can provide hours of operation during power failure at a low price vs a traditional UPS. It is designed to provide emergency power backup to all kinds of DC power equipments such as routers, modems, set-top boxes, VOIP phone systems, surveillance systems, alarm systems, personal communication systems, radios, digital cameras,POS, Bluetooth devices, smart cards and many other critical telecom equipments.