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batteries

How Batteries Work
Image: iStockphoto.com/scanrail

How Batteries Work

Batteries let us use electricity pretty much anywhere. What if you had to plug your cell phone into an outlet to make a call or even just get a text message?

While there are many different types, all batteries store electrical energy and then create an electrochemical reaction when you connect them to a device. Take a closer look at how batteries work and all the things they can power.

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Ann Makosinski: Google Science Fair 2013 Global Finalist

Ann Makosinski: Google Science Fair 2013 Global Finalist

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Ordinary braking cars turn their kinetic energy into useless heat energy. Braking hybrid or electric cars, by contrast, turn their kinetic energy into electrical energy. Very useful. More...

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Your challenge: Enter the testing area and see if you can build an increasing complex set of circuits that will power a light bulb with the energy stored in a battery. More...

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Take a look at a new type of battery built with microscopic wood fibers and carbon nanotubes. Could this wood battery one day store energy generated by solar arrays or wind farms? More...

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What if you could drive 500 miles with no gas, just a single charge of your car's battery? That's the goal behind the Battery 500 Project, started in 2009 by IBM. Check it out. More...

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You don't need a factory to create a battery. Build one with a lemon, copper wire, paper clips, and sandpaper. More...

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Take a look inside your laptop or cell phone and one thing is clear: These small batteries carry a big electrical punch. Find out what makes lithium-ion batteries so much better than alkaline ones. More...

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