Mediabridge Portable External Battery Pack - 2200mAh - Built-In Charging Cables - For Samsung S6/S5/Note II (Part# PB2200) CHARGE ON-THE-GO: Additional on-the-go battery life for your power-hungry Samsung, HTC, Nokia or other Micro-USB enabled smartphone. Extend music & talk time, web browsing & Email usage for hours. 500 CHARGING CYCLES: Samsung Lithium Ion batteries charge most Android & Windows based smartphones, & have the capacity to provide up to 500 charging cycles. Dimensions: 3.5x1x1. CABLES ATTACHED: Built-in Micro-USB & standard USB cable for charging your device & battery pack respectively. Status-indicators & a single button for all functions. Condenses for neat storage. ADAPTIVE CHARGER: Adapts to your device & charges more efficiently after 5-10 discharge cycles. Simply charge your battery pack using a common USB charging port.