The Juice All-Nighter is equipped with high capacity 4000 mAh Li-polymer rechargeable battery, providing sufficient energy to charge your smart phone and iPhone one and a half charges, and iPad Air over 40%. Featuring a maximum output current up to 2.4A, it gives you the ability to charge two devices simultaneously. It features a built-in Apple Lightning compatible connection for connecting to iPhones, iPod touch, and iPads. Via it’s USB output port the Juice All-Nighter is compatible with most smart phones, tablets and many other USB-powered devices such as Samsung phones and many more when connecting with a USB charging cable. The Juice All-Nighter has patented ‘Smart Power Detection’ technology, you can check the remaining battery capacity at a glance without pressing any buttons. Shake the charger and the LED lights will display the remaining battery capacity.