ATC LLC via Amazon offers the Lumsing 10,050mAh USB Power Bank
in Silver, Gold, or Black for
$13.99. Coupon code "GKFGW4OS" cuts it to
. Plus, Prime members bag free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.13.) That's $22 off list and the lowest total price we could find. It features two USB charging ports and comes with a USB cable. Deal ends July 31.
Update: The price has dropped to $8.99
See all Amazon Coupons.