Description Reviews Rechargeable 20, 800Mah battery extends your battery by 8X giving you up to 100 hours of extra battery* Two high-output USB charging ports with a total output of 4.2a enables you to quickly charge two power-hungry Device simultaneously. LED power indicator displays battery levels and charge status. Know before you go. Triple-tested battery ensures peak performance and safe operation The #1 and most trusted brand in portable power. Color: Black The mophie power boost XXL portable charger is a Compact and reliable power solution to charge smartphones, tablets and other USB devices when you need them most. The LED status indicator displays battery levels and charge status. Rest easy knowing your 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 you need it. The digital power management system, capable of up to 2.1A Output per port, uses smart charging circuitry to communicate with each device and determine the correct amount of power required for a safe, quick charge. Recharge your power boost battery by plugging the included micro USB cable into a USB wall adapter or laptop.