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How to Use Watts Per Hour The small number to the right of the mAh is the watt-hours. This number can be used to choose the correct battery for your aircraft. QUESTION: In your article “Electric Myths Busted!” (November 2012), you pictured a battery that had an unfamiliar rating (33.3Wh). I assume this is the product of C and Volts or Watt-hours. Is this some value that we should be concerned with?—Walt Moore ANSWER: In...

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