eCase via Amazon offers the Kmashi 10,000mAh Dual-USB External Portable Battery Pack in Black, model no. 6.96E+12, for $13.99. Coupon code "3BAXHHBA" cuts that to $9.20. Plus, Prime members bag free shipping. (Non-members can spend $35 to bag free shipping; otherwise, it adds $6.52.) That's tied with our mention from a month ago and the lowest total price we could find by $7. It features two USB ports, intelligent power management, and overcharge and short circuit protection. Deal ends February 28.