Posted by admin | Posted in Flashlights | Posted on 24-03-2010
Tags: battery, electronics, flashlight, flashlight battery corrosion, flashlight battery disposal, flashlight battery life, flashlight battery sizes, flashlight battery tester, led, shopping
Flashlight Battery
How Laptop Batteries Work
BaÂtteries are all over the place — in our cars, our PCs, laptops, portable MP3 players and cell phones. A battery is essentially a can full of chemicals that produce electrons. Chemical reactions that produce electrons are called electrochemical reactions. In this article, you’ll learn all about batteries — the basic concept at work, the actual chemistry going on inside a battery, rechargeable versions, what the future holds for batteries and possible power sources that could replace them. Voltage: 11.1V
Capacity: 4400mAh
Type: Li-ion, 6 cells
UL certificated cells inside!
Brand New Replacement Product, works as genuine parts, 100% OEM Compatible!!
If you look at any battery, you’ll notice that it has two terminals. One terminal is marked (+), or positive, while the other is marked (-), or negative. In an AA, C or D cell (normal flashlight batteries), the ends of the battery are the terminals. In a large car battery, there are two heavy lead posts that act as the terminals.http://www.udtek.com/dell-latitude-d600-battery-cells-4400mah-p-24068.html
Electrons collect on the negative terminal of the battery. If you connect a wire between the negative and positive terminals, the electrons will flow from the negative to the positive terminal as fast as they can (and wear out the battery very quickly — this also tends to be dangerous, especially with large batteries, so it is not something you want to be doing). Normally, you connect some type of load to the battery using the wire. The load might be something like a Light Bulb, a motor or an electronic circuit like a radio.
ÂInside the battery itself, a chemical reaction produces the electrons. The speed of electron production by this chemical reaction (the battery’s internal resistance) controls how many electrons can flow between the terminals. Electrons flow from the battery into a wire, and must travel from the negative to the positive terminal for the chemical reaction to take place. That is why a battery can sit on a shelf for a year and still have plenty of power — unless electrons are flowing from the negative to the positive terminal, the chemical reaction does not take place. Once you connect a wire, the reaction starts. The ability to harness this sort of reaction started with the voltaic pile.
Next, we’ll check out how a voltaic pile works and look at other types of batteries.
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