Perfect for traveling businessmen or anyone on-the-go, Amazon offers the Belkin Dual USB charger + 3-Outlet Mini Travel Swivel Charger Surge Protector for only $10.54. This portable charger is currently selling for $15-$20 from other major retailers. This model sports 1 AMP / 5 Watt power output. There is a more powerful version that supports 2.1 AMP / 10 Watt, which may be a better choice for users looking to charge multiple high power drawing devices at once. Features include 2 powered USB ports, 3 AC outlets, wall-mountable design and surge protection to keep your devices safe. Deal is also available at Walmart.