The Sandberg PowerBank 18200 is a medium sized portable battery that features a rechargeable lithium-polymer battery pack with a capacity of 18200mAh, digital display from which you can check the current battery charge/status and a built-in LED flashlight (it's also covered by a 5 year warranty). Thanks to its high capacity the Powerbank 18200 has the ability to recharge most smartphones in the market today up to a total of 6 times and most tablets up to 3 times so it's safe to say that you will be covered for many days.