The 72V nominal voltage has become the mainstream standard configuration for medium and high-power electric motorcycle battery packs, perfectly balancing vehicle power performance, riding speed and battery system stability, and is widely used in lightweight electric motorcycle models with a battery weight under 15kg. Nominal voltage refers to the standard working voltage of the battery pack in daily operation, which is a core parameter determined by the series combination of single lithium cells. Specifically, the 72V nominal voltage system of electric motorcycle battery packs usually adopts a 20-series layout of 3.6V NMC pouch cells or a 22 to 24-series layout of 3.2V LiFePO4 pouch cells. This scientific series configuration enables the battery pack to maintain a stable 72V working voltage in most riding scenarios, providing consistent power support for the motor and controller.

The 72V nominal voltage design brings significant performance advantages to electric motorcycles compared with low-voltage systems such as 48V and 60V. In terms of power output, high nominal voltage can effectively reduce the working current under the same power demand, which greatly reduces the heat loss of the circuit and motor, and improves the overall energy conversion efficiency of the vehicle. This allows electric motorcycles to achieve higher top speed and stronger climbing torque, easily meeting urban road acceleration and slope driving needs. For lightweight battery packs under 15kg, the 72V high-voltage design avoids the problem of excessive cell parallel connection caused by low voltage and high capacity, realizing high power output with a smaller and lighter battery structure, and optimizing the vehicle’s weight distribution and portability.

The 72V nominal voltage system has excellent operational stability and safety compatibility, supporting long-term reliable use of electric motorcycles. The actual floating charge voltage of the 72V battery pack is controlled between 84V and 87V, and the cut-off discharge voltage is about 60V. The voltage fluctuation range is reasonable and will not cause impact damage to the motor, controller and other electrical components. Matched with the professional BMS in the battery pack, the system can accurately monitor the voltage of each series cell, automatically balance the voltage difference between cells, and avoid performance degradation caused by inconsistent voltage. In addition, the mature 72V voltage system has universal compatibility in the electric motorcycle industry, matching mainstream chargers, controllers and motor equipment, with convenient after-sales maintenance and strong replaceability. While ensuring high-power performance, it effectively guarantees the safety and durability of lightweight electric motorcycles in daily riding.