3 ms·
http://www.greenpacks.org/2010/07/19/green-battery-shake-it-to-generate-energy-with-vibration/ http://www.greenpacks.org/2010/07/19/green-battery-shake-it-...
by drtse4 16y ago
http://www.greenpacks.org/2010/07/19/green-battery-shake-it-to-generate-energy-with-vibration/ http://www.greenpacks.org/2010/07/19/green-battery-shake-it-...