A protective case for a mobile device is disclosed. The case includes an additional power source (i.e., a battery) that can supply electric current to the mobile device. A processing device within the protective case may be wirelessly connected to the mobile device, such as with a Bluetooth interface, and thereby control operational aspects of the battery case, including for example control over supplying power to the mobile device. The battery case may be part of a charging system or kit that includes a uniquely designed separate charger. In yet another aspect, the protective case may include unitary bumper flexible bumper co-molded to the body of the case and a male connector extending from a nested portion that is adapted to tilt outward from the case to facilitate insertion of the corresponding female port on the mobile device into the connector and into the case. The protective case may also include a stand in the form of dock or cradle to allow positioning and/or charging of the battery case and mobile device via external contact terminals correspondingly positioned on the outside of the case and in the cavity of the cradle.