eCase via Amazon offers the Kmashi Quick Charge 3.0 20,000mAh Portable Battery Pack, model no. VK7, for $36.99. Coupon code "Z6Y36CXQ" cuts it to $28.99. With free shipping, that's tied with our December mention and the lowest total price we could find today by $14. It features Qualcomm Quick Charge 3.0 technology, multi-level protection, a micro USB cable, and storage pouch.