It can full charge Mi 4: 3.5 times, iPhone 6: 5.5 times, iPad mini: 2.5 times Battery type:Imported lithium-ion batteries Input voltage:DC 5V Output voltage:DC 5.1V Input current:2.0A (TYP) Output current:2.1A (TYP) Rated capacity:3.75V/16000mAh (TYP) Charge time:Approx. 9hours @5V/2A with standard cable Size:145*60.4*22mm Load detection:Auto-detects device connection and removal Safety featuresThis product supports High voltage input limit, Feedback protection, Current output limit, Voltage output limit, Circuit breaker, Charge limit, PTC, Charge/discharge temperature Control Protection and recovery:Reset feature can be activated while device is charging Charging temp:0℃-45℃ (TYP) Discharging temp:Start up discharge temp: -10℃~+50℃ (TYP) Discharging temp: -20℃~+60℃ (TYP) Weight:350g