Specifications for a 2000W and 72V Hub Motor Battery

To run a 2000W and 72V hub motor, the battery must meet specific voltage and capacity requirements. In this detailed guide, we will explore the key specifications needed to ensure optimal performance and longevity.

Key Specifications to Consider

Voltage

The nominal voltage for the battery should be 72V. This typically means using a battery pack composed of multiple cells in series. For instance, a 72V battery pack can be made up of 20 lithium-ion cells (3.6V each) connected in series.

Capacity (Watt-Hours and Amp-Hours)

To determine the required capacity, use the formula:

Capacity Wh Power W × Time h

For example, if you want to run the motor at full power for 1 hour:

Capacity 2000W × 1h 2000Wh

This means you would need a battery with at least 2000Wh capacity. For longer usage, multiply the desired hours by 2000W.

To convert watt-hours to amp-hours, use this formula:

Capacity Ah Capacity Wh / Voltage V

For a 2000Wh capacity at 72V:

Capacity 2000Wh / 72V ≈ 27.78Ah

So, you would need a battery with at least 28Ah capacity at 72V for 1 hour of operation at full power.

Battery Type

A lithium-ion battery is a common choice due to its high energy density and efficiency. It is important to select a lithium-ion battery that is designed for high discharge rates to handle the 2000W load.

Discharge Rate (C-Rate)

Ensure the battery can handle the required discharge rate. For a 2000W motor at 72V, the current draw at full load is approximately 27.78A. The battery should have a discharge rate C-rate that can safely supply this current, typically rated above the continuous discharge current needed.

Summary

Voltage: 72V Capacity: At least 2000Wh (approximately 28Ah) Type: Lithium-ion or similar Discharge Rate: Sufficient to handle at least 28A continuous

Additional Considerations:

By not only considering the essential specifications, but also factors such as weight, size, and cost, you can make an informed decision when selecting the best battery for your specific application.

Related Keywords

Hub motor battery, 2000W motor battery, 72V motor battery