Jastek via Amazon offers the Jastek 60,000mAh Portable Power Bank for $229.89. Coupon code "VYMYK48C" cuts the price to $195.41. With free shipping, that's tied with last month's mention, $34 off list, and the lowest price we could find. It features four smart fast-charging USB ports and two 110-240V receptacles for devices up to 600 watts. Deal ends July 31.