Power Bank, Areion 2600mAh External Portable Power Bank Backup Battery USB Charger For Mobile Phone Purple 2600 mah of capacity. The number of cyclic charging is as high as 1000. Smart Size fit your pocket, you will never miss recharging the battery. Great energy conversion - higher than 80% for better efficiency An intelligent protection system is built in to effectively prevent overcharging and short circuit. It is stable, reliable and safe. Charges via Micro-USB power wire (included). Input: 5V/1A (7-8 hours to charge via 1A adapter); Output: USB 5V / 2.1A. Package contents: External Battery Pack, micro USB cable, instruction manual.