Electronic device case

A case for a mobile computing device, the case comprising:

• a hard shell comprising a front shell formed to a rigid shape of a front portion of the mobile computing device and a back shell formed to a rigid shape of a rear portion of the mobile computing device;
• a stretchable cushion layer disposed over the hard shell, wherein the stretchable cushion layer has sufficient elasticity to conform to the hard shell and provide cushioning to the case;
• and
• electrical circuitry disposed in the case and configured to:
• receive information indicating a state of a battery of the mobile computing device;
• and
• distribute electrical power received at a connector of the case from an external power source to the mobile computing device based on the received information.

A protective case for an electronic device having a battery, the protective case comprising:

• a hard shell comprising a front shell formed to a rigid shape of a front portion of the electronic device and a back shell formed to a rigid shape of a rear portion of the electronic device;
• a stretchable cushion layer disposed over the hard shell, wherein the stretchable cushion layer has sufficient elasticity to conform to the hard shell and provide cushioning to the case;
• a rechargeable battery disposed in the protective case;
• and
• electrical circuitry disposed in the protective case and configured to supply current from the rechargeable battery to the battery of the electronic device.