Greentimeszone via Amazon offers the Beswill 8,000mAh 3-Port USB Portable Solar Battery Pack in Black or Orange for $27.99. Coupon code "7Q4YF6MI" knocks that to $19.59. With free shipping, that's the lowest price we could find by $13. It can be charged via its solar panel or the included micro USB cable and features three USB charging ports, a 21-LED light panel, and carabiner. Deal ends November 21.