12000mAh Dual USB 1A / 2.1A Output External Battery Pack Charger [Model: Black] Huge Capacity, 12000mAh; Add 4-5 full charges or 40 hours of talk time to iPhone 5 / 4S / 4 / 3GS, 3 full charges for Samsung Galaxy S3, a full charge for iPad / iPad 2, or 400% + to most mobile phones' battery life Package includes: External Battery / 8 connectors for most phones / 1 spring USB power wire(switch cable) / 1 user manual CONNECTORS: micro USB, mini USB, Apple, Samsung P1000, Nokia DC 2.0 Compatible with: Apple iPhone 4S 4 3GS, iPad 2 The New iPad, iPod Touch; Samsung Galaxy S3 S2 S, Ace, Mini, Note, Nexus; HTC ONE X S V, Sensation XE, XL, Desire HD S,Incredible, Wildfire; Nokia lumia 900, 800, 710, N8, E7; Motorola Razr, Defy plus, Atrix, Flipout, Milestone; LG Optimus, Sony Ericsson xperia S, X10 mini pro, arc, X8, play, neo; Blackberry Bold 9900,9780,9700,Curve 8520,3G 9300,8900,torch 9800; Amazon Kindle & Kindle touch, paperwhite; Goolge Tablets. Battery Type: Li-polymer battery, Li-polymer battery is more stable and safe than Li-ion battery, such as both iPad and iPhone use the safer Li-polymer battery. 500+ recharge cycles over the life of the battery. 2 x USB Output: 5V 1.0A ~ 2.1A, design for charging Phones and Tablets, Can charge 2 Tablets or Smart Phones simultaneously.Security protection design: short-circuit and over current protection; The device will automatic shutdown when short circuit or overload output happened to avoid destroy the device and accident