Use Amazon coupon code PB31MPOW
Amazon is offering this Mpow 12000mAh External Battery Pack on sale for $38.99 after instant savings. Apply coupon code PB31MPOW and the price drops to $29.99. This battery pack is available in black or white, can charge two devices at once, and features 12000mah power bank and a micro USB cable. Shipping is free for prime members or with orders of $35 or more.