iMuto 20000mAh Portable Power Bank (Black) for $17.99 Shipped

iMuto 20000mAh Portable Power Bank (Black) for $17.99 shipped after coupon code OSHR4TTJ.  Here is a screenshot for reference.  According to the production description, this 20000mAh battery pack is enough to charge iPhone 6 almost 8 times, iPad Air almost 1.7 times, Galaxy S6 almost 5.7 times, Macbook 2016 almost 1.2 times.