Compact and easy to carry the mophie power boost portable charger is a reliable power solution to charge smartphones tablets and other USB devices when needed them most. The LED status indicator displays battery levels and charge status. Rest easy knowing a device is powered by the most trusted battery brand on the market. Equipped with charge vault technology industry-leading mophie batteries hold their charge for an extended period of time so they are ready right when needed. The digital power management system capable of up to 2.1A Output uses smart charging circuitry to communicate with each device and determine the correct amount of power required for a safe quick charge.