$14 with coupon for 20000mAh Power Bank Lightning and Micro Input LED Digital Display Portable Charger – CHARGER BLACK from GearBest

20000mAh Large Capacity: 20000mAh High Capacity Portable Power Bank Charger, smartphones multiple times.
Lightning and Micro USB Input: Apple Lightning Input Design, Convenient for Apple Users, The built-in Apple Lightning Connector perfect compatible with Apple product, Recharge with a Lightning Cable, Power Bank can be recharged using either Lightning cable or Micro USB cable. You can use the same cable to charge your phone or power bank.
Smart Digital LED: Smart Digital LED display ensures easy check and accurate battery capacity (90% of all other power banks never have this feature).
Simple and Compact: Fashionable and novel design, Rubber material, feel mellow, Same power, half size, Slim and sleek like iphone6 enough to hold in your hand, Perfect for travel, Perfect in your pocket
Super Protection Function: Polymer cell, Multi-purpose safety protection system. Core intelligent protection, overcharge protection, discharge protection, leakage protection. Safe and reliable, practical and long cycle life., more than 500 times the charging and discharging.