Maximum capacity tends to be the electric vehicle industry’s choice for reporting the maximum amount of energy that can be stored in a vehicle’s power pack.

About kWh : Where gasoline vehicles use gallons, electric vehicles frequently use kilowatt hours (kWh) to measure the total possible ‘fuel’ or energy storage capacity.

The Formula:
Maximum kWh = (# of cells) * (cell Amp-hour capacity rating) * (cell max voltage rating)

Nominal capacity is the most accurate measure of the amount of usable energy that can be stored in a vehicle’s power pack. It differs from maximum capacity because it is calculated using an average voltage that is more often ‘the norm’ rather than a maximum which is rarely seen.

About kWh: Where gasoline vehicles use gallons, electric vehicles frequently use kilowatt hours (kWh) to measure the total possible ‘fuel’ or energy storage capacity.

The Formula:
Nominal kWh = (# of cells) * (cell Amp-hour capacity rating) * (cell nominal voltage rating)

This represents the expected life of the power pack, to 80% of its original capacity, when the motorcycle is ridden according to the EPA's "city" UDDS duty cycle. An electric motorcycle can continue to function perfectly normal with a power pack that has lost over 20% of its original capacity. The only certain change will be a reduction in maximum range.

The Formula:
Estimated pack life (miles / km) = (EPA UDDS range) * (cycle-life rating of the battery) * (90%, to account for 20% linear capacity loss over this rated life)

This indicates the average cost to recharge a fully drained power pack. More often, riders will be charging a partially drained power pack and will have a lower cost of recharge. The actual cost of recharging will always be dictated by the amount of charge put into the power pack and the cost of electricity flowing from the particular outlet.

The Formula:
Typical Cost to Recharge = (US average consumer cost per KWh) X (Power Pack nominal capacity)