David Butcher created this “Pedal Powered Prime Mover” to power his 32-inch television. Put simply, if “you pedal at 70 watt output and watch TV for an hour while pedaling, the surplus (10 Wh) gets stored, but you can only draw 8 Wh back out of the battery — enabling you to watch TV for an additional 8 minutes.” Video after the jump. DIY plans here.

David Butcher created this “Pedal Powered Prime Mover” to power his 32-inch television. Put simply, if “you pedal at 70 watt output and watch TV for an hour while pedaling, the surplus (10 Wh) gets stored, but you can only draw 8 Wh back out of the battery — enabling you to watch TV for an additional 8 minutes.” Video after the jump. DIY plans here.