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FAQ: Battery Capacity.

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    FAQ: Battery Capacity.

    One of the most important factors of an electric bike is the capacity of the battery. The commonly used unit for specifying battery capacity is the Watt-hour. We are most often familiar with this term because electric utilities bill in Kilowatt-hours.

    A battery with a capacity of 100 Watt-hours can store enough energy to power a 100-Watt light bulb for one hour. A 500 Watt-hour battery can power 5 X 100-Watt light bulbs for 1 hour or 1 X 100-Watt light for 5 hours.

    You can calculate Watt-hours are by multiplying the battery’s voltage X the battery’s amp-hours. For example 52 Volts X 17.5 Amp-hours = 910 Watt-hours.

    While commonly used, because this approach is a simplification, engineers refer to this method as nominal capacity. More specific details about calculating actual battery capacity are located at Actual Battery Capacity.
    Last edited by funwithbikes; 04-03-2017, 12:12 PM.
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