Universal Charging PortThe single 1A charging port simulates an Apple 1A charger signal (nearly all USB devices on the market are capable of charging from this signal and has become the unofficial standard for USB charging).Designed with Compatibility in MindThe Plugable PB-6K2 can charge a multitude of devices such as all iPad and iPhone models including the iPad Mini, iPad Air, iPad Retina, Apple iPhone 6 & 6 Plus, iPhone 5s, iPhone 5c, iPhone 5, iPhone 4s, iPhone 4 and older, plus all 30pin dock connector iPods and iPod touch. Charges almost all Android phones and tablets including, but not limited to, Samsung Galaxy Tab, Note, and S series, Google Nexus 7, 5, 4, Motorola Droid, HTC, Nokia, Amazon Kindle Fire, HD, HDX, Nook, Blackberry, Sony PSP, Vita, Nindendo DS, 3DS, and many more. Battery ChargingIt"s easy to recharge from any USB port using a standard Micro USB cable. The Plugable PB-6K2 has a long storage life in between charge cycles to make sure it"s always ready when you need it most. It"s also easy to check how much power you have remaining. With a simple push of a button, charge indicator LEDs will let you know where you stand with 100%, 75%, 50%, and 25% remaining battery levels.SpecsPB-6K2 has an estimated capacitance power of 6,000mAh. It can be charged via any USB port and takes an input of 5V DC 800-1000mAh. Output-wise, the PB-6K2 has a single port rated at 5V DC 1000mAh.