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battery amperes matching

Discussion in 'Electronic Basics' started by hartly, Apr 5, 2005.

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  1. hartly

    hartly Guest

    If a camera draws 1 amp.,and I connect it to a battery that can supply
    10A,will it do any harm to the camera ,IF the volts correct for the
    camera?
    Thanks.
     
  2. Lord Garth

    Lord Garth Guest

    The camera draws what it needs so this is perfectly okay.

    It's like saying your sink needs 5 gallons but the faucet leads to Lake
    Erie.
     
  3. Don Bruder

    Don Bruder Guest

    It should pose no problem, as the device using the power, not the device
    supplying it, determines how much current will actually flow. Attach a
    (correct voltage) source to it that can supply *at least* the amperage
    required, and everything should "just work".
     
  4. No. The batteries set the upper bound on how much current a load can
    draw (the short circuit current) and a practical upper bound on load
    current, based on the capacity (ampere hours) and internal resistance
    (that lowers the voltage as the load current drops some of the voltage
    across the internal resistance. But if neither of these limits is in
    effect, the load just uses as much current as it needs. A bigger
    battery just lasts longer.
     
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