Hello, I ordered the external battery Anker Astro Pro 14400 mAh on Amazon.com: quick delivery. First: article visiuel very qualitative, little bulky for the capacity (no bigger than an external hard drive), protective pouch, many connectors provided. Use: charge my Sony P Xpeia very quick to position I (Iphone) with 2% per minute charge of my Asus Vivobook very fast also, and all, with the connectors provided. 4-6 reloads the smartphone / PC with battery level LED handy. However careful to press the button on top of the device to illuminate the small blue diodes (load device), otherwise it will produce the opposite effect: the external battery will pump some juice that it stays on your smartphone or pc! This is an excellent product, perfect for travel, I highly recommend it. Many greetings.