hurray for batteries! energy – it’s everywhere!. 2 where can we find batteries? in most of our...
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Hurray for Batteries!
Energy – It’s Everywhere!
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Where can we find batteries?
In most of our favorite gadgets:
Watches
Flashlights
MP3 Players
Cell Phones
Computers
Electric/Hybrid Cars
Many, many others…
If you remove the batteries, these gadgets won’t work.
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Electricity from a Battery
Batteries provide electrical energy
The energy comes from a chemical reaction
A complete circuit is required
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Energy Stored in a Battery
Battery design stores energy.
Metals are separated to slow flow of electrons.
When connected to a device, electrons can flow.
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Where’s the Chemistry?
Batteries are made of two different metals.
Electrolyte surrounds the metals.
A chemical reaction occurs.
Electrons flow from one metal to the other.
In batteries, chemical energy is converted to electrical energy
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Primary and Secondary Batteries
Primary batteries (disposable batteries) are designed to be used once and thrown away..
Secondary batteries (rechargeable batteries) are designed to be recharged and used multiple times.
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Battery Sizes - AAA to ME8Z
Batteries come in all shapes and sizes.
The chemical reactions power our favorite things.
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Electric/Hybrid Cars
All Electric cars run on batteries only.Hybrid cars use gasoline and batteries.
Batteries are used to store electricity when power plants are not available.
Industrial Storage