Replacement Battery Panasonic

Replacement Battery Panasonic

How batteries work

The batteries are everywhere – in our cars, our computers, laptops, portable media players MP3 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 will learn all about batteries – the basic concept at work, the real chemistry at that time within a battery, rechargeable versions, what the future holds for batteries and possible power sources that could replace them.

If you look at any battery, you will notice that it has two terminals. One terminal is marked (+), or positive, while the other is marked (-), or against. 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.

The electrons accumulate at the negative terminal of the battery. If you connect a wire between the positive and negative, electrons will flow the negative to the positive terminal as fast as you can (and wear out the battery very quickly – this also tends to be dangerous, especially with batteries large, so it's not something I want to do). Normally, you connect some type of load to the battery using the cable. The burden could be something like a light bulb, a motor or an electronic circuit like a radio.

Inside the battery itself, a chemical reaction produces the electrons. The rate of production of electrons by this chemical reaction (the battery's internal resistance) controls how many electrons can flow between the terminals. The electrons flow from the battery in a wire, and must travel from the negative to the positive terminal of the chemical reaction takes place. That is why a battery can sit on a shelf for a year and still has plenty of power – unless electrons flow from negative to positive, the chemical reaction does not occur. Once you connect a cable, the reaction begins. The ability to use this type of reaction is started with the voltaic pile.

Then let's see how a voltaic cell and watch other battery.

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