Vantrue via Amazon offers the Solove Titan Ultra Slim 20,000mAh Dual USB Portable Charger / Power Bank in Silver for $44.90. Coupon code "SOLOVE12" cuts it to $32.90. With free shipping, that's $2 under last month's mention, $85 off list, and the lowest total price we've seen. It features over-current and over-heating protection, can charge two 5-volt devices simultaneously, and includes a digital LCD indicator.