BrexLink via Amazon offers the Brexlink 6,000mAh iPhone X Rechargeable Portable Charging Case in Black for $34.99. Coupon code "43DEALNE38" cuts the price to $19.94. (Discount may appear automatically at checkout.) With free shipping, that's $15 off list and the lowest price we could find, although we saw it for pennies less in December. It features a 360° edge coverage, an integrated circuit, and provides 150% extra battery life. Deal ends February 18.