As soldiers, hikers and students can testify, it takes energy to haul around a heavy backpack. Now, researchers have developed a backpack that turns that energy into electricity.USATODAY.com - New backpack puts the juice in power walking
In the days immediately following Hurricane Katrina, radio and phone communication suffered, in part, when rechargeable batteries died and could not be recharged due to widespread power outages. A new backpack design may offer a way for first responders and disaster relief workers to generate their own electricity for communications devices, night vision goggles, water purifiers or other crucial, portable electronics.Backpack generates its own electricity - Science Mysteries - MSNBC.com
All the person wearing the backpack has to do is walk — the backpack does the rest. The backpack captures energy from the up-and-down movements of its heavy contents and converts this energy to electricity.