Urgent Power 5200mAh battery provides up to 20 hours of additional talk time for iPhones and Smartphones, and 200%-300% to the battery life of most mobile phones. It will add up to 5 hours of additional power for most tablets. A USB charging cable, apple 30-pin connector, Micro USB & Mini-USB connectors are included, making it compatible with most smart phones, e-Readers, Tablets, iPads and iPods. The UrgentPower DX can be charged via any powered USB port, so you can always have it ready when you need it. Conveniently sized to carry in a case or your pocket, the UrgentPower is easy to take with you! 4 LED battery level indicators, Convenient Built-in LED flashlight, Auto sensing on/off feature saves battery charge, Over Voltage/Under Voltage Protection.