Solar panel helps keep you in contact on the go
If you use a Samsung Galaxy S4 smartphone and are in the market for a new case a company called EnerPlex has a new case called the Surfr it's worth a look. This case is designed to protect the screen and the body of the Galaxy S4 from scratches and drops during use.
The case also has a large 2500 mAh internal battery designed to significantly extend runtime of the device. That internal battery can be recharged from an outlet or USB port when in the home or office. The case also has integrated solar panel allowing you to recharge the battery on the go.