Bevena 6200mAh Dual USB (2.1Amp+1Amp Output,1.5 Amp Input Fast Charging) Ultra-Compact Portable Charger External Battery Pack Portable Battery Power Bank for iPhone 6 Plus 5S 5C 5 4S 4 iPad Air Retina Mini Samsung Galaxy S5 S4 S3 I9600 Neo S4 I9500 I9190 S3 I9300 S3 I8190 S2 Note 3 N9000 Gear HTC Sensation One X S EVO 3D 4G DNA Thunderbolt Incredible Droid DNANexus 4 7 10 LG Optimus V Blackberry Z10 Z30 Q5 Q10 Bold Curve Torch Vita Gopro more Phones and Tablets and More&ndash;Black High Capacity, 6200mAh; 2.5-3.5 full charges or add 36 hours talk time to your iPhone 5S / 5C / 4S ; 1.5-2.5 charges for Samsung Galaxy S4 / S3, 200 hours + audio playback, or 200%-300% to the battery life of most mobile phones. Charge most of mobile devices including smart phones, tablets, and digital cameras with standard USB 5V power input One USB port up to 1.2A current output support fast charging for most smart phones and mobile devices One USB port up to 2.1A current output support fast charging for most msart phones and mobile devices LED indication for Battery level status.It's very easy to use and has a cool,clear LED display that tells your how much power the external battery has left.