LumsingDirect via Amazon offers the Lumsing Ultrathin 8,000mAh Portable Battery Pack in Black or White for $12.99. Coupon code "YLPDT7LN" cuts it to $6.49. Plus, Prime members bag free shipping. That's $2 under our March mention and the lowest price we could find by $4. It features two USB ports and LED indicators. Deal ends April 23.