The integrated solar panel on the Solion Communicator will store energy from the sun within its internal Lithium-ion battery, and is capable of holding it for up to a year. It works with virtually all Bluetooth-enabled cell phones and will be released sometime in the middle of this year for 79. [Mobile World Congress] Better Energy Systems has introduced its Solio Communicator at Mobile World Congress 2009, tackling the going green issue with new gusto. Alternatively when the sun is out, you can use a cigarette lighter socket or a USB port to juice this puppy up. The Solio Communicator also doubles up as a speakerphone, letting you continue conversing on your handset while driving without having to remove either hand from the wheel. [Press Release]

Other features include a high fidelity directional microphone. It tips the scales at just 150 grams, allowing you to place it across a variety of surfaces including the dashboard, visor or window. 99 Euros a pop. The Solio Communicator hopes to provide virtually unlimited talk-time by harnessing the power of the sun, doing away with the need for pesky car kits, although the latter will come in handy if you tend to do a whole lot of traveling at night.