CoooStar via Amazon offers the Puridea S2 10,000mAh Battery Pack in several colors (Blue pictured) for $14.99 $12.99. Coupon code "PURIDEA1" cuts it to $12.74 $11.04. With free shipping for Prime members, that's the lowest price we could find by $9. It features dual USB output and LED indicators. Deal ends November 24.