Black Lenmar Helix 11000mAh Portable Power Pack with 3 USB Ports for Mobile Phones and Tablets; Three USB Ports power and charge up to 3 mobile devices simultaneously; High Output: 2.4A USB Port charges iPad/Tablets and smartphones. Dual 1A USB ports power iPhone, android, mobile phones and other USB powered devices. Charge one tablet/iPad up to one full time. Fully charges iPhone up to 4 times. Provides maximum charge e?ciency for mobile devices: charges as fast as the device allows; Lenmar Helix Portable Power Pack will fully recharge in 8.5 hours- based on minimum 2A output USB Charger.