optimumnano
Products Description
1. The OptimumNano 76V 55Ah LiFePO₄ battery pack is engineered for electric two- and three-wheelers, delivering strong power and long-distance performance. Built with A-grade LiFePO₄ cells, it provides over 5300 charge cycles and a service life exceeding 8 years.
2. Equipped with a smart BMS offering 20 safety protections, it effectively prevents overcharge, overdischarge, short circuit, and overheating.
3. With an IP6 waterproof rating and a lightweight aluminum alloy case, this battery ensures reliable performance under tough outdoor conditions. Its modular structure allows fast installation and easy maintenance - making it an ideal power solution for delivery fleets and commercial users.
Specification
| Item | Parameters | |
| Product Model | 7655 | |
| Nominal Energy (Wh) | 3302 | |
| Nomnal Voltage (V) | 76.8 | |
| Operating Voltage(V) | 60-87.6 | |
| Maximum Discharge Current(A) | 55 | |
| Peak Current(A) | 82.5 | |
| Dimensions (L×W×H,mm) | 460*220*180 | |
| Product Weight (kg) | 28 | |
| Waterproof Rating | IP6 | |
| Charging Temperature(℃) | 0-55 | |
| Discharging Temperature(℃) | -20-60 | |
| Heating Function | Optional | |
| GPS/Bluetooth Function | Optional | |
Features
1. The 76V 55Ah LiFePO₄ battery pack is designed for high-performance electric tricycles and e-motorcycles, offering powerful acceleration and extended range up to 120 km on a single charge.
2. Built with automotive-grade LiFePO₄ cells, it delivers superior safety, stability, and long cycle life-over 5000 charge cycles, ensuring years of reliable operation even under frequent start-stop and high-load conditions.
3. The Smart BMS provides real-time monitoring, 20+ layers of intelligent protection, and precise charge/discharge control to maximize both performance and safety.
4. With IP67 waterproof and dustproof protection, this battery is ready for all-weather operation, performing reliably in rain, heat, or rugged environments perfect for delivery fleets, urban commuters, and utility trikes.
5. Lightweight yet durable, it offers 3X higher energy efficiency than traditional lead-acid batteries, helping users save costs while enjoying stronger power and longer riding time.
Battery Discharge Curve
The discharge curve remains flat and stable, demonstrating excellent voltage consistency and high-quality battery performance
Application
Perfect for electric motorcycles, three-wheelers, and enclosed tricycles-ideal for commuting, deliveries, and fleet operations.
Factory & Quipment
Founded in 2002, OptimumNano is one of China's earliest companies in the power and energy storage battery industry, with deep technical expertise and strong market influence.We are the founder of cylindrical LiFePO₄ (LFP) cells. With nearly 20 years of R&D and manufacturing experience, the core team relocated from Shenzhen to Gaoyou, inheriting and upgrading the original technology and management systems.Established in 2020, OptimumNano Gaoyou focuses on the R&D, production, and sales of cylindrical LiFePO₄ cells, providing customized battery solutions to clients worldwide.
Certification
OptimumNano specializes in high-performance 64V 25Ah LiFePO₄ battery packs for electric motorcycles, three-wheelers, and enclosed tricycles. Our products meet global safety and quality standards, certified with UN38.3, MSDS, BIS (for India), UL, CE, and more, ensuring reliable performance for customers worldwide.
FAQ
1. What is the voltage and capacity of this battery pack?
R: The nominal voltage is 76.8V and the capacity is 55Ah, providing about 4.22kWh of usable energy.
2. How long is the cycle life?
R: The 76V 55Ah LiFePO4 battery can exceed 4000 cycles at 80% DOD, with over 10 years of typical service life.
3. Can this battery pack be customized?
R: Yes. Voltage, capacity, casing design, communication protocol (CAN, RS485, Bluetooth), and connector types can all be customized.
4. What protection functions does the BMS provide?
R: The smart BMS protects against overcharge, over-discharge, overcurrent, short circuit, and high temperature, and also balances each cell automatically.
5. What are the main applications?
R: Electric vehicles, solar energy storage, UPS backup power, AGVs, and portable or industrial ESS systems.
6. What certifications does this battery pack have?
R: All batteries are tested and certified to UN38.3, MSDS, CE, and IEC62133 standards
7. How do you ensure quality and consistency?
R: Each cell is graded and matched before assembly. Every pack undergoes QC tests including aging, vibration, and safety inspection.
8. What is the lead time for bulk orders?
R: Standard models take 15–25 days after payment; custom designs may take slightly longer.
9. Do you provide OEM/technical support?
R: Yes, full OEM/ODM service, system integration guidance, and after-sales support are provided worldwide.
