EZOPower Black 2 USB Port Compact External Portable Rechargeable Emergency Backup Battery Charger (5000mAh) - Includes USB Charging Cable + Interchangable Charging Tips for HTC Desire / Desire 601, One Max, One Mini, One (M7) Universal, convenient, portable, and compact external rechargable high capacity back-up battery. Compatible with most portable devices (Mobile Phones, Music Players, Portable Gaming Devices, Digital Readers, etc.) Charges via included USB cable + Includes interchangable charging tips such as mini USB, micro USB, and more for your convenience. 2 USB ports for Dual Charging, 5000mAh battery capacity, Output 1(S) & Output 2(I): USB ~ 5V 2A; Input: Micro-USB ~ 5V 1000mA; Includes 1 year warranty.