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Median annual earnings for several branches of engineering (U.S., 2009): Electrical: $83,110 Civil: $76,590 Mechanical: $77,020 Computer Hardware: $98,820 Environmental: $77,040 Nuclear: $96,910Biomedical: $78,860

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battery parallelBattery packs achieve the desired operating voltage by connecting several cells in series, with each cell adding to the total terminal voltage. Parallel connection attains higher capacity for increased current handling, as each cell adds to the total current handling. Some packs may have a combination of serial and parallel connections.


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batteryExperimental batteries live mostly in sheltered laboratories, communicating to the outside world through rosy reports generated for investors. Some systems show good potential, but many are years away from becoming commercially viable. Others disappear from the scene and die gracefully in the lab without hearing of their passing. Below are the most promising experimental batteries worth mentioning in alphabetical order.


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 battery typesEarly batteries were in jars, but mass production changed the packaging to the cylindrical design. The year 1896 pioneered the large F cell for lanterns; the D cell followed in 1898, the C cell in 1900, and the popular AA was introduced in 1907. Design criteria and cost considerations required new battery formats that offer distinct advantages over the cylindrical design.



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alternate bateryThe media tells us of wonderful new batteries being developed that promise long runtimes and are paper-thin, durable, cheap and environmental friendly. While these experimental packs may be able to produce a voltage, the downsides are seldom revealed. The typical shortcomings are weak load capabilities and short cycle life. Yes, even a lemon can be made into a battery. Just poke a copper coin and galvanized nail into the innards. The power is low and you need 500 lemons to light a flashlight bulb.

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  • Crash Course on Batteries


    Here are excellent articles collected from net that explain basic terms used with batteries. Very useful text to read even if you have certain knowledge about batteries.


  • Battery Types


    There are many different battery ties and each is specific on how to test if it is empty, how to use, charge. There are many advices that will ensure that you do not destroy battery and device it is powering. It will help you decide what battery is best for your project. Very useful text to read.


  • Packaging and Safety


    Batteries come in many different packaging. Sometimes they consist of more batteries combined together. Batteries are useful but can be dangerous in not used properly. Articles from this section of will help you answer all questions you have from this area.


  • Charge Methods


    Charging various types of batteries can be tricky. Here are explained ways and conditions of charging different types of batteries. All criteria of knowing how much is battery full and everything you need to know when designing battery power supply with charging option for your device


  • Discharge Methods


    Here are explained ways and conditions of discharging different types of batteries. All criteria of knowing how much is battery full and everything you need to know when designing battery power supply with discharging option for your device