eCase via Amazon offers Prime members the Kmashi Quick Charge 2.0 20,000mAh Portable Battery Pack, model no. Victor K6, for $32.99. Coupon code "98P4L4RA" cuts it to $19.99. Plus, Prime members bag free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.82.) That's tied with our November mention and the lowest total price we've seen. (It's the best deal now by $12.) It includes one Kmashi Quick Charge 2.0 20000mAh external battery, one micro USB cable, one VIP card, and a user manual. Deal ends January 31.