Building a 72V 30Ah EV Motorcycle Battery Pack: A Technical Case Study with EVE's G16 Cells

This case study details the successful development of a high-performance 72V 30Ah battery pack for an American electric motorcycle startup, utilizing EVE's premium cylindrical cells. Partnering with expert ​OEM ODM​ manufacturers was key to integrating the robust ​EVE 3.7V 31.9Ah Cylindrical battery​ into a reliable propulsion system.

​Client Profile & Challenge​

• ​Client:​​ VoltRide Motors (California, USA)
• ​Industry:​​ Electric Vehicle Manufacturing
• ​Challenge:​​ VoltRide needed a compact, high-voltage battery solution for their new performance electric motorcycle model. The pack required a minimum capacity of 30Ah and a nominal voltage of 72V to deliver extended range and powerful acceleration, while ensuring safety and reliability. Sourcing from reputable ​Starmax Energy Lithium Ion Battery manufacturers​ was a priority to guarantee quality.

​Technical Solution: The 1P20S G16 Battery Pack​
Our engineering team, specializing in ​OEM ODM​ solutions, designed a 1P20S configuration using 20 units of the EVE G16 (EVE 3.7V 31.9Ah Cylindrical battery). This architecture perfectly meets the voltage and capacity requirements.

• ​Voltage Calculation:​​ 20 cells in series (20S) x 3.68V (nominal voltage) = 73.6V (Nominal Pack Voltage).
• ​Capacity Calculation:​​ 1 cell in parallel (1P) x 31.9Ah = 31.9Ah (Total Pack Capacity). This exceeds the 30Ah target, providing a buffer for performance.
• ​Energy Output:​​ 73.6V x 31.9Ah ≈ 2348 Wh.

The selection of the G16 cell was strategic. Its high energy density (117.7Wh) and superior rate capability (standard discharge current of 10.6A, with peak capabilities up to 3C) make it ideal for the dynamic power demands of an electric motorcycle. The design could be adapted using ​Specifically 2x G13 INR4695P and 2x G16 INR4695E​ for different voltage needs, but the 20S G16 configuration was optimal here. Collaboration with experienced ​Starmax Energy Lithium Ion Battery manufacturers​ ensured the design leveraged the cell's full potential.

​Performance & Safety Engineering​
The pack was engineered for peak performance, capitalizing on the ​EVE 3.7V 31.9Ah Cylindrical battery​'s strengths documented in its specification sheet.

• ​Power Delivery:​​ The G16 cells support a maximum continuous discharge current of 139A at 25°C. For the pack, this translates to a potential continuous power output of over 10kW, enabling strong acceleration.
• ​Thermal Management:​​ A custom aluminum enclosure with integrated cooling channels was designed to maintain optimal cell temperature within the recommended 10°C to 45°C range during high-load operation, ensuring longevity.
• ​BMS Integration:​​ A sophisticated Battery Management System (BMS) was configured according to EVE's provided parameters (SOC-OCV tables, voltage/current/temperature limits). This protects against overcharge, over-discharge, short circuits, and ensures cell balancing, a critical aspect of our ​OEM ODM​ service.

​Prototype Validation & Cost Analysis​
A prototype was built and rigorously tested. The pack achieved all performance targets, with cycle life testing indicating a lifespan well over 800 cycles while maintaining above 80% capacity, consistent with the G16's specifications. For VoltRide, the total project cost for development and initial small-batch production was approximately ​​$12,000-$15,000. Partnering with expert ​Starmax Energy Lithium Ion Battery manufacturers​ for a custom ​OEM ODM​ solution provided significant value compared to off-the-shelf options. The design's scalability, potentially using variations like ​Specifically 2x G13 INR4695P and 2x G16 INR4695E, offers future flexibility.


Ready to power your next innovation?​​ Whether your project requires a standard configuration or a complex solution involving ​Specifically 2x G13 INR4695P and 2x G16 INR4695E, our engineering team is ready to collaborate. Contact us today for a detailed consultation and quote to develop a high-performance, custom battery pack that meets your exact specifications and budget. Let's build the future of mobility together.

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