Hasta La Gadget!

SaFPWR (pronounced “safe power) has announced the availability of its new line of iPhone 4 battery cases. The Milano line comes with a rechargeable 2200mAh smart battery integrated into the case. Getting one will set you back $99.95. The battery doubles the power of the iPhone 4 automatically, so no on/off switch is needed. When an iPhone is inserted into the case, it automatically connects with the second battery with the SaFPWR Advanced Energy Management Technology system.

Circuitry in the case prevents short-circuiting, overcharging, over discharging, energy flow-back, and malfunction. The cases come in red and black, with a scaly surface described as a “lizard look.” It takes 3½ hours to get a full charge and weighs just 3.2 ounces.