Kmashi is currently offering its 10000mAh power bank for just $9.20 at Amazon with coupon code DZIBCBG3, a savings of nearly $5. With this, you can charge two devices at the same time, and 10000mAh is enough for multiple full charges of your phone or tablet. There are four status LEDs that easily show you how much power the pack has, and it can output at a total of 5V 3.1A between the two ports.
Remember, you'll need coupon code DZIBCBG3 to get the full savings.
