With so many power hungry devices these days, multiple portable power banks/chargers can be handy. If you don’t need a device that supports Qualcomm’s Quick Charge, you can get a better bang for the buck, partly because of the additional technology, partly because Qualcomm is very licensing-hungry.
Which brings us to the RAVPower 12000 mAh Dual 2.4A Output offered for $16 with coupon code 12000AMZ. The coupon is good for one unit. Additional units are $17.59 each. For additional combined purchase discounts, check under the “Special offers and product promotions” section on the product page.