eCase via Amazon offers Prime members the Kmashi 10,000mAh MP816 External Battery Pack for $13.99. Coupon code "JAK3JCUV" cuts it to $9.39. With free shipping, that's a buck under our April mention, the lowest total price we've seen for any 10,000mAh battery, and a current price low by $8. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.55.) It features dual-USB ports and four status LEDs.