How do batteries work? How much energy is your plugged-in gadget using? How do UPC codes work? Find this out and more with Everyday Tech.
Batteries power all sorts of things -- they're in our cars, our PCs, our cameras, our cell phones. How do these tiny cans of chemicals provide power for so many of our daily conveniences?
By Marshall Brain, Charles W. Bryant & Clint Pumphrey
We all like our gadgets, especially those that make live easier or just plain fun. Take a look at some of the most sold electronics out there to see if your favorite made the list.
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