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Posted on January 13, 2012

Solar power for Kindle

Triboelectric Energy Harvesting (TENG) 2017-2027
Amazon Kindle owners can now harness the power of the sun to illuminate and charge their e-readers, using the new SolarKindle Lighted Cover, which was unveiled at this week's Consumer Electronics Show in Las Vegas.
The cover has a built-in solar panel that charges the reserve battery for the LED reading light while also providing extra power to the Kindle. The reading light draws power from the reserve battery, not the Kindle so the battery does not drain.
When the solar panel is exposed to sunlight or shade the Kindle will be constantly charging but once fully charged the solar panel automatically switches to charge the reserve battery. Charging times will vary depending on the intensity of available sunlight, but a one hour charge in direct sunlight can provide almost three days worth of reading time.
You can still charge the Kindle using the cover's built-in reserve battery. After charging the Kindle, the LED indicator will blink green indicating the reserve battery is being charged.
A fully charged reserve battery requires only eight hours of direct sunlight and provides up to 80% of backup power to the Kindle. That's almost three days of use time for each hour of charging!
High Power Energy Harvesting: