Aphotovoltaic keyboard, orsolar keyboard,[1][2] is awireless computer keyboard that charges its batteries from a light source such as the sun or interior lighting, addressing a major drawback of wireless computer peripherals that otherwise require regular replacement of discharged batteries.[citation needed]
One such device is the Logitech K750, which was announced by the company in 2010.[citation needed] In 2018 Microsoft filed a patent describing how solar panels could be used to extend battery life for Microsoft'sSurface Pro.[3]
TheLogitech K750 has a set ofphotovoltaic cells on the top edge, charges from any light source includingsunlight and under a standardbulb, can work up to three months in total darkness, and includes software to display battery charging status. It is a full-sized keyboard, including the usual movement keys and NumPad section on the right side, with low-profile keys much like a laptop.[4] There are two models, compatible withWindows orMacintosh operating systems.[1][5]
Even though the keyboard is not officially supported inLinux, a third-party application named Solaar provides functionality akin to the original Logitech software, such as battery and connection status indications, and allows device pairing/unpairing.[6][7][8][9][10]
AnotherLogitech keyboard, the K760, is also PV powered. It is smaller than the Logitech K750 and communicates with the computer viaBluetooth. It was positively reviewed by David Carnoy ofCNET, who praised its sleek, stylish design, and its ability to be seamlessly integrated with Apple products. Although he found it slightly bulky to carry around and criticized the lack of carrying case provided by Logitech, he concluded that in the long run, it would save a user money, and was a better deal than Apple's Bluetooth Wireless Keyboard.[11]
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