EBL Official via Amazon offers the Aibocn 8,000mAh USB Portable Battery Pack in White for $9.99. Coupon code "62UJJ9GJ" cuts it to $5.99. Plus, Prime members qualify for free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.33.) That's $44 off list, the lowest total price we could find, and a very good deal for an 8,000mAh charger. It features dual USB charging ports.