Innergie Pocket Cell Duo Rechargeable Battery Bank The Innergie Pocketcell Duo lite design is minimalist and the exterior has a pearly texture with streamlined curves that make it very comfortable to handle. Each USB port provides a high power 2.1A current for the quick charging of two tablets, or one tablet and one smart phone. Innergie offers quicker charging, allowing you to do more and experience more with your device. Be in control of how much power you have left - gently hold the button and observe the hidden 5-level blue LED indicators to check the reserve power currently available. Innergie products are safer than ever. With Innergies InnerShield Protection Technology, all of your devices are protected from over-current, over-power, over-voltage, over-temperature, and short-circuiting, giving you stable power and peace of mind. Smart technology that helps save the planet; our GreenSense technology just makes sense. Thats why we incorporate it in our adapters to make them more energy-efficient. Because saving energy helps save our planet, and our GreenSense technology helps keep our world green.