Anker is quite known for providing high quality products and above all that has specifications "clear and accurate" compared with other exotic products that sometimes do not even have 10% of what is advertised. So here we have a real laptop battery 13000 mAh capacity. But to take advantage of such power, we must accept a weight of about 300g and a size of over 15cm long. No pain no gain. The battery has two USB iQ with innovative technology that automatically manages the output capacity up to 2.1A (for an iPad for example). You can use the two USB ports simultaneously, the two shots that can deliver up to 3.6A met. In short, a good product, and above all a very good service at Anker.