Bsone via Amazon offers the Ayyie 10,000mAh Solar Portable Battery Pack in several colors (Blue pictured) for $22.88. Coupon code "6P3TYDJT" cuts that to $13.73. With free shipping for Prime members, that's the lowest price we could find by $18. It features dual USB ports, a 2-LED flashlight, and compass. Deal ends August 25.