EPCTEK&reg; New 2600mAh Premium Portable Power Bank Pack External Battery Backup Charger with 0.8A Output for iPhone 5, 4S, 4, iPad, iPad Mini,Samsung Galaxy S4, S3, S2, Note 2, HTC One, EVO, Thunderbolt, Incredible, Droid DNA, Motorola ATRIX, Moto X, Droid, Google Glass, Nexus 4, LG Optimus and More (Silver) Capacity,2600mAh;Fit for your iPhone 4S / 4G / 3GSSamsung Galaxy S4 / S3, Nokia and other smart phones; Compact, portable, Sleek, stylish and compact design Easily fits into your bag to provide instant power; PERFECT for trainroad trips, or whenever you need to charge your mobile devices wherever you are High quality Lithium-ion battery ensures reliability Input: DC 5V 800mAh,Output: DC 5V 800mAh; Charge the power bank via standard USB or AC adapter (not included)