iPhone 5 case with battery from PowerSkin

The chassis features a 1,500mAh battery that brings up to 8 hours of additional usage on Wi-Fi.

The case is also capable of extending talk time by 6.5 hours and pump standby time up to 182 hours.

An on/off button is located on the back, allowing users to power-on-demand.

In addition, the LED battery lights will show how much charge the PowerSkin has left.

The device measures 2.5 × 0.65 × 5.1 inches and weighs 0.18 pounds, making it easy for you to carry.

Source: PowerSkin