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Old 08-31-2009, 12:25 PM   #2 (permalink)
miro
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The energy you get from the batteries is the same, but losses are a function of the current. Energy is power x time eg watt-hours.
But the losses in the system are a function of the current squared . So if you reduced the current by half, you reduce the losses by 4x, even though you are getting the same power (( volts x amps) .
That is why higher voltages are gaining popularity.
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