ANSWERS: 3
  • Pixie dust. The recharge fairies are closely related to the tooth fairies.
  • A battery produces electricity through a chemical reaction. In some case this chemical reaction can be force backwards by the application of and electrical current in opposition to the one generated by the batter. Thus the battery can be recharged. However, this only works in batteries that are specifically designed to be rechargeable. If you try this with a battery that is not rechargeable, then excess heat can build up in the battery causing it to explode. ************** gabstar wrote, "how does the chemical reaction occur? " It's going on two decades since my last chemistry class. So, I am a little rusty on the particulars of the chemical reactions. However, just what happens will depend on the chemical used to make the batters. There are some commonalities though. As the reaction proceeds, electrons are released from one of the chemicals and into an electrode. These electrons can then be used to power an electrical device. Once the electrons have passed through the device they go back into the battery at a second electrode. When the electrons are released by the one chemical in the battery, then that atom or compound becomes an ion. At the same time that the electrons are traveling through the wires of the device, the ions are also traveling through the battery toward the second electrode. At this second electrode, the ions and electrons meet up again and the process is complete. For more details I would suggest http://en.wikipedia.org/wiki/Battery_%28electricity%29
  • In a vehicle the alternator usually charges the battery. But there are many kinds of battery chargers.

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