Power Banks are handy to have around for various situations, such as power outages and getting stranded with a broken-down vehicle. Oh, and camping! Or fishing!
This 12,000mAh power bank can charge your phone up to 4 times before it needs to be recharged. It has two USB-A outputs, so you can charge two devices at once! Don't limit yourself to charging phones... it can be used for any device that can be recharged with a USB-C or Micro USB cable.