Aukey 20000mAh USB C Power Delivery 3.0 Battery Pack w/ Qi Wireless Charging
& More + Free S/H
Update: This popular deal is back again
Aukey Direct via Amazon has Aukey 20000mAh USB C Power Delivery 3.0 Portable Battery Pack w/ Foldable Stand, USB-A Quick Charge 3.0 Port & Qi Wireless Charging (PB-WL03) on sale for $36.33 when you follow the instructions below. Shipping is free.
Thanks to Slickdeals Deal Editor iconian for finding this deal.
On the final checkout page, apply promotion code HEA8GOI6 where it says "Add a gift card or promotion code or voucher"
Price will be $36.33 + free shipping after all discounts are applied.
Aukey Direct via Amazon also has Aukey 10000mAh USB C Power Delivery 3.0 Portable Battery Pack w/ USB-A Quick Charge 3.0 Port (PB-N83) on sale for $15.95 when you follow the instructions below. Shipping is free with Prime or on $25+ orders.