... ,5V/2.1A 5,Charging time:7-8hr Product Specifications for wzx-0751. Cell type:Li-battery2. Capacity:4400mAh3. Input:5V ... ,Compatible with Iphone, ipad ,ipod ,Nokia,Blackberry,HTC etc .2,smart shape design ,no need to remove the cover then you ... ,no additional wiring to charge the battery ,safe and convenient . hot selling portable power supply