5600mah Portable Backup Battery Charger USB Power Bank for Smart Phones and Other Digital Devices - For Iphone 5s, 5c, 5, 4s, 4, Samsung Galaxy S4, S3, Note 2, Note 3, HTC One, Motorola Droid, Moto X, Lg Optimus And (Green) Most Other Smartphones and Usb-charged Devices Retail Packaging (3 Years Warranty) Capacity: 5600mAh; Add hours of talk time to your iPhone 5 / 4 / 4s ; 1 charge for iPhone; Add 80+ hours of audio playback, or 100% to most mobile phones' battery life Safety: Smart IC controller inside. Short circuit, over charge and discharge protection. Long lifetime: 18650 Lion battery, up to 1000 charge-discharge cycles